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* [PATCH 0/4] ch341: Add support for HL340 devices
@ 2020-03-06 19:00 Michael Hanselmann
  2020-03-06 19:00 ` [PATCH 1/4] ch341: Name more registers Michael Hanselmann
                   ` (4 more replies)
  0 siblings, 5 replies; 14+ messages in thread
From: Michael Hanselmann @ 2020-03-06 19:00 UTC (permalink / raw)
  To: linux-usb, Johan Hovold; +Cc: Michael Hanselmann, Michael Dreher, Jonathan Olds

A subset of CH341 devices does not support all features, namely the
prescaler is limited to a reduced precision and there is no support for
sending a RS232 break condition.

These devices can usually be identified by an imprint of "340" on the
turquoise-colored plug. They're also sometimes called "HL340", hence the
terminology in this series and driver.

This series adds detection of these devices, adjusts the
divisor/prescaler setup and implements a simulated break condition.

Michael Hanselmann (4):
  ch341: Name more registers
  ch341: Detect HL340 variant
  ch341: Limit prescaler on HL340 variant
  ch341: Simulate break condition on HL340 variant

 drivers/usb/serial/ch341.c | 196 +++++++++++++++++++++++++++++++++----
 1 file changed, 176 insertions(+), 20 deletions(-)

-- 
2.20.1


^ permalink raw reply	[flat|nested] 14+ messages in thread

end of thread, other threads:[~2020-03-31 23:35 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-03-06 19:00 [PATCH 0/4] ch341: Add support for HL340 devices Michael Hanselmann
2020-03-06 19:00 ` [PATCH 1/4] ch341: Name more registers Michael Hanselmann
2020-03-24 10:20   ` Johan Hovold
2020-03-31 23:34     ` Michael Hanselmann
2020-03-06 19:00 ` [PATCH 2/4] ch341: Detect HL340 variant Michael Hanselmann
2020-03-24 10:31   ` Johan Hovold
2020-03-31 23:35     ` Michael Hanselmann
2020-03-06 19:00 ` [PATCH 3/4] ch341: Limit prescaler on " Michael Hanselmann
2020-03-24 10:41   ` Johan Hovold
2020-03-31 23:35     ` Michael Hanselmann
2020-03-06 19:00 ` [PATCH 4/4] ch341: Simulate break condition " Michael Hanselmann
2020-03-24 10:55   ` Johan Hovold
2020-03-24 10:05 ` [PATCH 0/4] ch341: Add support for HL340 devices Johan Hovold
2020-03-31 23:35   ` Michael Hanselmann

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