On Fri, Dec 04, 2020 at 07:58:53AM +0100, Jiri Slaby wrote:
> On 02. 12. 20, 12:48, Johan Hovold wrote:
> >>> but I question the
> >>> usefulness of doing so, as it is a chicken and egg problem: one needs
> >>> to open the tty device in order to do termios ioctls on it, and if
> >>> that initial op
On 02. 12. 20, 12:48, Johan Hovold wrote:
but I question the
usefulness of doing so, as it is a chicken and egg problem: one needs
to open the tty device in order to do termios ioctls on it, and if
that initial open triggers DTR/RTS hardware actions, then the end user
is still screwed. If Johan
On Tue, Dec 01, 2020 at 08:14:07AM +0100, Jiri Slaby wrote:
> On 30. 11. 20, 22:22, Mychaela Falconia wrote:
> > 2) For situations in which the luxury of a custom USB ID is not
> > available, e.g., a situation where the device that does not tolerate
> > automatic DTR/RTS assertion on open is a phys
On Tue, Dec 01, 2020 at 12:48:48PM +0200, Andy Shevchenko wrote:
> On Mon, Nov 30, 2020 at 11:25 PM Mychaela Falconia
> wrote:
> > > Why not call it nomctrl ?
> >
> > I have no opinion one way or another as to what the new sysfs attribute
> > should be called - my use case won't involve this sysf
On Mon, Nov 30, 2020 at 11:25 PM Mychaela Falconia
wrote:
...
> Johan's patch comments say that the new flag can also be brought out
> to termios in the future, similarly to HUPCL, but I question the
> usefulness of doing so, as it is a chicken and egg problem: one needs
> to open the tty device
On Mon, Nov 30, 2020 at 01:22:07PM -0800, Mychaela Falconia wrote:
> Johan's patch comments say that the new flag can also be brought out
> to termios in the future, similarly to HUPCL, but I question the
> usefulness of doing so, as it is a chicken and egg problem: one needs
> to open the tty dev
On 11/30/20, Jiri Slaby wrote:
> The difference to other control flags is that open raises DTR/RTS in any
> case (i.e. including O_NONBLOCK)
Yes, this is the exact root-cause problem I am trying to fix, with Johan's help.
> -- provided baud rate is set (and it is
> for casual serials). That mean
On 30. 11. 20, 22:22, Mychaela Falconia wrote:
2) For situations in which the luxury of a custom USB ID is not
available, e.g., a situation where the device that does not tolerate
automatic DTR/RTS assertion on open is a physical RS-232 device that
can be connected to "any" serial port, the new s
A quick background for Greg and others who haven't seen the Sept-Oct
discussion between me and Johan on the linux-usb ML: I am the hardware
engineer who designed the FT2232D-based DUART28C adapter board, and it
was my desire to have this custom FT2232D adapter supported in mainline
Linux that trigg
This series adds a new NORDY port flag to suppress raising the
modem-control lines on open to signal DTE readiness.
This can be used to implement a NORDY termios control flag to complement
HUPCL, which controls lowering of the modem-control lines on final
close.
Initially drivers can export t
10 matches
Mail list logo
