commit 031f9664f8 upstream.
This is adds a device id for HP LD381 which is a pl2303GC-base device.
Signed-off-by: Scott Chen <scott@labau.com.tw>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit cecc113c1a upstream.
Add a device id for HP LD381 Display
LD381: 03f0:0f7f
Signed-off-by: Scott Chen <scott@labau.com.tw>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
While there are a mix of things here, most of the stuff
were written from Kernel developer's PoV. So, add them to
the driver-api book.
A follow up for this patch would be to move documents from
there that are specific to sysadmins, adding them to the
admin-guide.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is adds the vendor and device id for the AT-VT-Kit3 which is a
pl2303-based device.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Add helper function to update register bits instead of overwriting the
entire control register when updating the flow-control settings.
This specifically avoids having the tranceiver suspend mode (bit 0)
depend on the flow control setting.
The tranceiver is currently configured at probe to be disabled during
suspend, but this was overridden when disabling flow control or enabling
xon/xoff.
Fixes: 715f9527c1 ("USB: flow control fix for pl2303")
Fixes: 7041d9c3f0 ("USB: serial: pl2303: add support for tx xon/xoff flow control")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Older pl2303 devices do not support automatic xon/xoff flow control, so
add add a flag to prevent trying to enable it for legacy device types.
Refactor the IXON test into a helper function to improve readability.
Fixes: 7041d9c3f0 ("USB: serial: pl2303: add support for tx xon/xoff flow control")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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Merge tag 'usb-serial-4.11-rc1' of 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>
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>
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>
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: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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: 399aa9a75a ("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>
This phone is already supported by the visor driver.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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>
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>
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>
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>
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>
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>
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>
Declare constant device-type data as const.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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>
Use direct baud-rate encoding rather than divisors for supported baud
rates.
This restores the way baud rates were set prior to commit 8d48fdf689
("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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Scott Chen