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path: root/drivers/usb/serial/pl2303.c
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2019-01-17USB: serial: pl2303: add new PID to support PL2303TBCharles Yeh
Add new PID to support PL2303TB (TYPE_HX) Signed-off-by: Charles Yeh <charlesyeh522@gmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2018-12-18USB: serial: pl2303: add ids for Hewlett-Packard HP POS pole displaysScott Chen
Add device ids to pl2303 for the HP POS pole displays: LM920: 03f0:026b TD620: 03f0:0956 LD960TA: 03f0:4439 LD220TA: 03f0:4349 LM940: 03f0:5039 Signed-off-by: Scott Chen <scott@labau.com.tw> Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2018-10-13pl2303: switch to ->get_serial()Al Viro
Reviewed-by: Johan Hovold <johan@kernel.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-08-02USB: serial: pl2303: add a new device id for ATENMovie Song
Signed-off-by: Movie Song <MovieSong@aten-itlab.cn> Cc: Johan Hovold <johan@kernel.org> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-22USB: serial: pl2303: add support for tx xon/xoff flow controlFlorian Zumbiehl
Support hardware-level Xon/Xoff flow control in transmit direction with pl2303. I only know how to get the hardware to do IXON/!IXANY with ^S/^Q as control characters, so I preserve the old behaviour for all other cases. Signed-off-by: Florian Zumbiehl <florz@florz.de> [ johan: rewrite logic using pl2303_termios_change() helper ] Signed-off-by: Johan Hovold <johan@kernel.org>
2018-01-25USB: serial: pl2303: new device id for ChilitagGreg Kroah-Hartman
This adds a new device id for Chilitag devices to the pl2303 driver. Reported-by: "Chu.Mike [朱堅宜]" <Mike-Chu@prolific.com.tw> Cc: stable <stable@vger.kernel.org> Acked-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-04USB: serial: fix module-license macrosJohan Hovold
Several GPL-2.0 drivers used "GPL" rather than "GPL v2" in their MODULE_LICENSE macros; fix the macros to match the licenses. Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-04USB: serial: Remove redundant license textGreg Kroah-Hartman
Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-04USB: add SPDX identifiers to all remaining files in drivers/usb/Greg Kroah-Hartman
It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Update the drivers/usb/ and include/linux/usb* files with the correct SPDX license identifier based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> Acked-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-10USB: serial: pl2303: add new ATEN device idGreg Kroah-Hartman
This adds a new ATEN device id for a new pl2303-based device. Reported-by: Peter Kuo <PeterKuo@aten.com.tw> Cc: stable <stable@vger.kernel.org> Cc: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-28USB: serial: pl2303: clean up legacy endpoint hackJohan Hovold
Implement the "horrible endpoint hack" for some legacy devices as a quirk and clean up the code somewhat. Note that the bulk-endpoint check can be removed as core will already have verified this. Signed-off-by: Johan Hovold <johan@kernel.org>
2017-03-28USB: serial: move pl2303 hack out of usb-serial coreJohan Hovold
Some pl2303 devices require the use of the interrupt endpoint of an unrelated interface. This has so far been dealt with in usb-serial core, but can now be moved to a driver calc_num_ports callback. Note that we relax the endpoint requirements checked by core and instead verify that we have an interrupt-in endpoint in calc_num_ports for all devices so that the hack can first be applied. Signed-off-by: Johan Hovold <johan@kernel.org>
2017-03-16USB: serial: pl2303: simplify endpoint checkJohan Hovold
Simplify the endpoint sanity check by letting core verify that the required endpoints are present. Signed-off-by: Johan Hovold <johan@kernel.org>
2017-02-09Merge tag 'usb-serial-4.11-rc1' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next Johan writes: USB-serial updates for v4.11-rc1 These updates include - a new driver for Renesas uPD78F0730-based devices - several fixes of failures to check for short transfers, some of which could lead to minor information leaks, and in one case a loop-condition underflow - a fix of a long-standing regression in the ftdi_sio driver which resulted in excessive bulk-in interrupts - a fix for ftdi_sio line-status over-reporting which could lead to an endless stream of NULL-characters being forwarded to user space - a fix for a regression in the console driver - a fix for another mos7840 NULL-pointer dereference due to a missing endpoint sanity check Included are also some clean ups and fixes for various minor issues, as well as a couple of new device IDs that came in late. All but the final patch have been in linux-next with no reported issues. Signed-off-by: Johan Hovold <johan@kernel.org>
2017-01-31USB: serial: pl2303: add ATEN device IDMarcel J.E. Mol
Seems that ATEN serial-to-usb devices using pl2303 exist with different device ids. This patch adds a missing device ID so it is recognised by the driver. Signed-off-by: Marcel J.E. Mol <marcel@mesa.nl> Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2017-01-16USB: serial: pl2303: fix line-setting error handlingJohan Hovold
Make sure to return an error on zero-length transfers when retrieving the line settings even if the driver currently ignores the return value. Also remove a redundant check for short transfer when setting the line settings. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2017-01-04USB: serial: pl2303: fix NULL-deref at openJohan Hovold
Fix NULL-pointer dereference in open() should a type-0 or type-1 device lack the expected endpoints: Unable to handle kernel NULL pointer dereference at virtual address 00000030 ... PC is at pl2303_open+0x38/0xec [pl2303] Note that a missing interrupt-in endpoint would have caused open() to fail. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2015-07-30USB: pl2303: fix baud-rate divisor calculationsMichał Pecio
This commit fixes the following issues: 1. The 9th bit of buf was believed to be the LSB of divisor's exponent, but the hardware interprets it as MSB (9th bit) of the mantissa. The exponent is actually one bit shorter and applies to base 4, not 2 as previously believed. 2. Loop iterations doubled the exponent instead of incrementing. 3. The exponent wasn't checked for overflow. 4. The function returned requested rate instead of actual rate. Due to issue #2, the old code deviated from the wrong formula described in #1 and actually yielded correct rates when divisor was lower than 4096 by using exponents of 0, 2 or 4 base-2, interpreted as 0, 1, 2 base-4 with the 9th mantissa bit clear. However, at 93.75 kbaud or less the rate turned out too slow due to #2 or too fast due to #2 and #3. I tested this patch by sending and validating 0x00,0x01,..,0xff to an FTDI dongle at 234, 987, 2401, 9601, 31415, 115199, 250k, 500k, 750k, 1M, 1.5M, 3M+1 baud. All rates passed. I also used pv to check speed at some rates unsupported by FTDI: 45 (the lowest possible), 2M, 4M, 5M and 6M-1. Looked sane. Signed-off-by: Michal Pecio <michal.pecio@gmail.com> Fixes: 399aa9a75ad3 ("USB: pl2303: use divisors for unsupported baud rates") Cc: stable <stable@vger.kernel.org> # v3.18 [johan: update summary ] Signed-off-by: Johan Hovold <johan@kernel.org>
2015-04-29USB: pl2303: Remove support for Samsung I330Jason A. Donenfeld
This phone is already supported by the visor driver. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2015-02-26USB: pl2303: disable break on shutdownJohan Hovold
Currently an enabled break state is not disabled on final close nor on re-open and has to be disabled manually. Fix this by disabling break on port shutdown. Reported-by: Jari Ruusu <jariruusu@users.sourceforge.net> Tested-by: Jari Ruusu <jariruusu@users.sourceforge.net> Signed-off-by: Johan Hovold <johan@kernel.org>
2014-09-01USB: pl2303: use divisors for unsupported baud ratesLauri Hintsala
Use direct method for supported baud rates, otherwise use divisors. Limit baud rate to 12 Mbaud with HX type. This change has been tested to work with PL-2303HX at 115200, 500000, 1000000, 2000000, 2500000, 3000000 and 4000000 baud rates. Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com> Signed-off-by: Johan Hovold <johan@kernel.org>
2014-08-18USB: serial: pl2303: add device id for ztek deviceGreg KH
This adds a new device id to the pl2303 driver for the ZTEK device. Reported-by: Mike Chu <Mike-Chu@prolific.com.tw> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2014-04-16USB: pl2303: add ids for Hewlett-Packard HP POS pole displaysAaron Sanders
Add device ids to pl2303 for the Hewlett-Packard HP POS pole displays: LD960: 03f0:0B39 LCM220: 03f0:3139 LCM960: 03f0:3239 [ Johan: fix indentation and sort PIDs numerically ] Signed-off-by: Aaron Sanders <aaron.sanders@hp.com> Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-08usb: delete non-required instances of include <linux/init.h>Paul Gortmaker
None of these files are actually using any __init type directives and hence don't need to include <linux/init.h>. Most are just a left over from __devinit and __cpuinit removal, or simply due to code getting copied from one driver to the next. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: switch to generic TIOCMIWAIT implementationJohan Hovold
Switch to the generic TIOCMIWAIT implementation which does not suffer from the races involved when using the deprecated sleep_on functions. Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: only wake up MSR queue on changesJohan Hovold
Only wake up MSR wait queue on actual modem-status changes. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: clean up line-status handlingJohan Hovold
Clean up line-status handling somewhat. Get tty-reference only when actually needed. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: make type data constJohan Hovold
Declare constant device-type data as const. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: use C_CMSPAR macroJohan Hovold
Use the new C_CMSPAR macro for consistency. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: use direct baud-rate encoding when possibleJohan Hovold
Use direct baud-rate encoding rather than divisors for supported baud rates. This restores the way baud rates were set prior to commit 8d48fdf689fe ("USB: PL2303: correctly handle baudrates above 115200") which added divisor encoding, but also switched to the new encoding method for all baudrates above 115200. As noted by Frank Schäfer <fschaefer.oss@googlemail.com>, baud rate 500k was later errounously added to the supported baud-rate table although it can only be set using divisors. Note that the current implementation could easily be extended to support arbitrary non-standard baud rates using divisors (e.g. by falling back to divisors when the table lookup fails). Cc: Frank Schäfer <fschaefer.oss@googlemail.com> Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: add helper function for direct baud-rate encodingJohan Hovold
Add helper function for direct baud-rate encoding. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: refactor baud-rate divisor handlingJohan Hovold
Refactor baud-rate divisor handling. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: enforce baud-rate limits before lookupJohan Hovold
Enforce any baud-rate limits before doing table lookup. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: refactor baud-rate table lookupJohan Hovold
Refactor supported baud-rate table lookup. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: rename pl2303_encode_baud_rateJohan Hovold
Rename baud-rate encoding function to match tty naming. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: add device-type abstractionJohan Hovold
Encode all device-type specifics in a struct rather than testing for device type and spreading such information throughout the driver. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: add quirk for legacy devicesJohan Hovold
Add quirk for legacy devices (type 0 and 1) rather than testing on device type throughout the driver. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: clean up type handlingJohan Hovold
Merge types 0 and 1, whose differences are unknown and have always been treated the same. Add TYPE_-prefix to both types. Test for TYPE_01 (rather than !TYPE_HX) for legacy device quirks. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: use speed_t for baud ratesJohan Hovold
Use speed_t for baud rates throughout. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: add line-status quirk for Siemens phonesJohan Hovold
Implement line-status handling for Siemens phones as a quirk rather than spreading such information all over the driver by matching on vendor and and product ids. Note that the SIEMENS_PRODUCT_ID_EF81, which was added after the line-status handling for the other Siemens phones was fixed, might also need this quirk. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: remove redundant line-request callJohan Hovold
Remove redundant get_line_request (the read back settings are never used). Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: add error handling to line requestsJohan Hovold
Refactor and add error handling to line requests. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: add error handling to set_control_linesJohan Hovold
Add error handling to set_control_lines. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: add error handling to vendor read and write functionsJohan Hovold
Add error handling and clean up vendor read and write functions. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: clean up driver somewhatJohan Hovold
Use u16 rather than __u16. Fix multi-line comment style. Remove some comments. Remove unnecessary whitespace and add some where appropriate. Drop DRIVER_DESC define. Merge and simplify multi-line error message. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: remove bogus delta_msr_wait wake upJohan Hovold
Remove bogus MSR wait-queue wake up from process_read_urb which never updates the MSR flags. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: serial: remove redundant OOM messagesJohan Hovold
Remove redundant error messages on allocation failures, which have already been logged. Cc: Joe Perches <joe@perches.com> Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: serial: clean up ioctl debuggingJohan Hovold
Remove redundant ioctl debugging from subdrivers. The ioctl request code has already been logged by usb-serial core. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-03USB: pl2303: fix data corruption on termios updatesJohan Hovold
Some PL2303 devices are known to lose bytes if you change serial settings even to the same values as before. Avoid this by comparing the encoded settings with the previsouly used ones before configuring the device. The common case was fixed by commit bf5e5834bffc6 ("pl2303: Fix mode switching regression"), but this problem was still possible to trigger, for instance, by using the TCSETS2-interface to repeatedly request 115201 baud, which gets mapped to 115200 and thus always triggers a settings update. Cc: Frank Schäfer <fschaefer.oss@googlemail.com> Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-02USB: pl2303: fixed handling of CS5 settingColin Leitner
This patch fixes the CS5 setting on the PL2303 USB-to-serial devices. CS5 has a value of 0 and the CSIZE setting has been skipped altogether by the enclosing if. Tested on 3.11.6 and the scope shows the correct output after the fix has been applied. Tagged to be added to stable, because it fixes a user visible driver bug and is simple enough to backport easily. Signed-off-by: Colin Leitner <colin.leitner@gmail.com> Signed-off-by: Johan Hovold <jhovold@gmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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