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26c78daade
linux/drivers/usb/serial
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Peter E. Berger 26c78daade USB: io_ti: Add heartbeat to keep idle EP/416 ports from disconnecting 
When using Edgeport/416 models with newer firmware (sometime after
firmware version 4.80.0), idle ports are automatically bounced
(disconnected and then reconnected) approximately every 60 seconds.
This breaks programs (e.g: minicom) where idle periods are common,
normal and expected.

I confirmed with the manufacturer (Digi International) that Edgeport/416
models now ship from the factory with firmware that expects periodic
"heartbeat" queries from the driver to keep idle ports alive.  This
patch implements heartbeat support using the mechanism Digi suggested
(periodically requesting an I2C descriptor address) that appears effective
on Edgeports running the newer firmware (that require it) and benign on
Edgeport devices running older firmware.  Since we know that Edgeport
firmware version 4.80 (the version distributed in /lib/firmware/down3.bin
and used for Edgeports that are either running still older versions or
have no onboard non-volatile firmware image) does not require heartbeat
support, this patch schedules heartbeats only on Edgeport/416 devices,
and only if they are running firmware versions newer than 4.80.

Signed-off-by: Peter E. Berger <pberger@brimson.com>
[johan: minor style changes ]
Signed-off-by: Johan Hovold <johan@kernel.org>
2015-07-31 12:09:57 +02:00
..
aircable.c USB: serial: correct spelling mistakes in comments 2014-01-03 12:39:31 -08:00
ark3116.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
belkin_sa.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
belkin_sa.h
bus.c USB: serial: clean up bus probe error handling 2015-02-26 17:13:05 +01:00
ch341.c USB-serial updates for v4.1-rc1 2015-04-03 18:59:34 +02:00
console.c USB: console: add dummy __module_get 2015-02-26 17:06:39 +01:00
cp210x.c USB: cp210x: add ID for Aruba Networks controllers 2015-07-06 13:50:30 +02:00
cyberjack.c USB: serial: add missing newlines to dev_<level> messages. 2014-03-12 12:44:50 -07:00
cypress_m8.c USB: serial: add missing newlines to dev_<level> messages. 2014-03-12 12:44:50 -07:00
cypress_m8.h USB: cypress_m8: only wake up MSR queue on changes 2014-01-03 12:42:24 -08:00
digi_acceleport.c usb: serial: Remove unused tty->hw_stopped 2014-09-23 21:19:35 -07:00
empeg.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
ezusb_convert.pl
f81232.c USB: f81232: fix some minor style issues 2015-03-27 17:36:29 +01:00
ftdi_sio_ids.h USB: serial: ftdi_sio: Fix broken URL in comment 2015-07-20 10:30:24 +02:00
ftdi_sio.c USB: serial: ftdi_sio: Add support for a Motion Tracker Development Board 2015-05-21 16:41:51 +02:00
ftdi_sio.h
garmin_gps.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
generic.c USB: serial: fix infinite wait_until_sent timeout 2015-03-07 03:44:14 +01:00
io_16654.h
io_edgeport.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
io_edgeport.h
io_ionsp.h
io_tables.h USB: io_edgeport: switch to generic TIOCMIWAIT implementation 2013-03-25 13:50:53 -07:00
io_ti.c USB: io_ti: Add heartbeat to keep idle EP/416 ports from disconnecting 2015-07-31 12:09:57 +02:00
io_ti.h
io_usbvend.h USB: io_ti: fix firmware download on big-endian machines (part 2) 2014-05-27 15:12:57 -07:00
ipaq.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
ipw.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
ir-usb.c USB: serial: remove redundant OOM messages 2014-01-03 12:31:46 -08:00
iuu_phoenix.c USB: serial: add missing newlines to dev_<level> messages. 2014-03-12 12:44:50 -07:00
iuu_phoenix.h
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-06-23 14:08:54 -07:00
keyspan_pda.c USB: keyspan_pda: add new device id 2015-03-19 18:04:01 +01:00
keyspan_usa26msg.h USB: serial: correct spelling mistakes in comments 2014-01-03 12:39:31 -08:00
keyspan_usa28msg.h
keyspan_usa49msg.h
keyspan_usa67msg.h
keyspan_usa90msg.h
keyspan.c USB: keyspan: fix null-deref at probe 2015-01-02 15:12:28 +01:00
keyspan.h USB: keyspan: fix NULL-pointer dereferences and memory leaks 2012-10-25 09:37:13 -07:00
kl5kusb105.c USB: kl5kusb105: Remove klsi_105_tiocmset function 2014-07-09 15:44:06 -07:00
kl5kusb105.h
kobil_sct.c USB-serial updates for v3.19-rc1 2014-11-26 10:41:46 -08:00
kobil_sct.h
Makefile USB: serial: remove zte_ev driver 2014-09-15 18:43:08 +02:00
Makefile-keyspan_pda_fw
mct_u232.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
mct_u232.h
metro-usb.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
mos7720.c USB: mos7720: rename registers 2015-07-06 12:15:02 +02:00
mos7840.c USB: serial: mos7840: Use setup_timer 2015-06-01 16:39:41 +02:00
mxuport.c USB: mxuport: fix null deref when used as a console 2015-02-26 17:13:59 +01:00
navman.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
omninet.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
opticon.c USB: opticon: fix non-atomic allocation in write path 2014-11-03 09:07:30 +01:00
option.c USB: option: add 2020:4000 ID 2015-07-06 12:02:03 +02:00
oti6858.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
oti6858.h
pl2303.c USB: pl2303: fix baud-rate divisor calculations 2015-07-30 18:11:07 +02:00
pl2303.h USB: pl2303: Remove support for Samsung I330 2015-04-29 12:34:24 +02:00
qcaux.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
qcserial.c USB: qcserial/option: make AT URCs work for Sierra Wireless MC73xx 2015-01-07 10:12:25 +01:00
quatech2.c USB: serial: add missing newlines to dev_<level> messages. 2014-03-12 12:44:50 -07:00
safe_serial.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
sierra.c USB: sierra: add 1199:68AA device ID 2014-09-01 11:55:30 +02:00
spcp8x5.c USB: serial: add missing newlines to dev_<level> messages. 2014-03-12 12:44:50 -07:00
ssu100.c USB: ssu100: fix overrun-error reporting 2014-11-19 16:22:22 +01:00
symbolserial.c USB: serial: add missing newlines to dev_<level> messages. 2014-03-12 12:44:50 -07:00
ti_usb_3410_5052.c usb: serial: Remove unused tty->hw_stopped 2014-09-23 21:19:35 -07:00
ti_usb_3410_5052.h USB: serial: ti_usb_3410_5052: new device id for Abbot strip port cable 2013-06-19 15:54:45 -07:00
usb_debug.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
usb_wwan.c Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next 2014-06-03 12:57:53 -07:00
usb-serial-simple.c USB patches for 3.19-rc1 2014-12-14 14:57:16 -08:00
usb-serial.c USB: serial: Destroy serial_minors IDR on module exit 2015-07-09 10:41:23 +02:00
usb-wwan.h USB: usb_wwan: do not resume I/O on closing ports 2014-05-27 15:04:08 -07:00
visor.c USB: visor: Match I330 phone more precisely 2015-04-29 12:36:52 +02:00
visor.h USB: serial: correct spelling mistakes in comments 2014-01-03 12:39:31 -08:00
whiteheat.c USB: whiteheat: Added bounds checking for bulk command response 2014-08-24 14:15:08 -05:00
whiteheat.h
wishbone-serial.c usb: delete non-required instances of include <linux/init.h> 2014-01-08 15:01:39 -08:00
xsens_mt.c usb: serial: xsens_mt: always bind to interface number 1 2014-09-04 11:18:26 +02:00