serial amba-pl010: enable PPS support
Function pl010_enable_ms() is automagically called when PPS ldisc is selected. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -471,6 +471,20 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios,
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spin_unlock_irqrestore(&uap->port.lock, flags);
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}
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static void pl010_set_ldisc(struct uart_port *port)
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{
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int line = port->line;
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if (line >= port->state->port.tty->driver->num)
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return;
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if (port->state->port.tty->ldisc->ops->num == N_PPS) {
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port->flags |= UPF_HARDPPS_CD;
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pl010_enable_ms(port);
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} else
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port->flags &= ~UPF_HARDPPS_CD;
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}
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static const char *pl010_type(struct uart_port *port)
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{
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return port->type == PORT_AMBA ? "AMBA" : NULL;
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@ -531,6 +545,7 @@ static struct uart_ops amba_pl010_pops = {
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.startup = pl010_startup,
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.shutdown = pl010_shutdown,
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.set_termios = pl010_set_termios,
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.set_ldisc = pl010_set_ldisc,
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.type = pl010_type,
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.release_port = pl010_release_port,
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.request_port = pl010_request_port,
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