[patch 6/6] staging: speakup: Migrate acntsa, bns, dectlk and txprt to ttyio
samuel.thibault at ens-lyon.org
Fri Mar 24 15:46:11 EDT 2017
Okash Khawaja, on ven. 24 mars 2017 19:40:42 +0000, wrote:
> On Fri, Mar 24, 2017 at 08:24:22PM +0100, Samuel Thibault wrote:
> > Okash Khawaja, on ven. 24 mars 2017 19:21:54 +0000, wrote:
> > > On Sun, Feb 26, 2017 at 03:59:30AM +0100, Samuel Thibault wrote:
> > > > and then in speakup_apollo.c, instead of
> > > >
> > > > outb(UART_MCR_DTR, speakup_info.port_tts + UART_MCR);
> > > > outb(UART_MCR_DTR | UART_MCR_RTS,
> > > > speakup_info.port_tts + UART_MCR);
> > >
> > > Is there a specific reason for keeping DTR set all the time? Or is it
> > > just a defensive measure?
> > I guess the device requires it. That's normal RS232 signaling anyway.
> > With tiocmset, however, you won't have to care: the generic code will
> > already have enabled DTR, and you will only want to clear and set RTS.
> I noticed that spk_serial_init sets it and other places keep it set. By
> generic code, do you mean that when migrated to TTY, we don't have to
> explicitly set DTR?
Yes, it'll already be enabled by the layers below.
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