W dniu 2014-09-17 11:15, Janusz Uzycki pisze:
static struct platform_device_id mxs_auart_devtype[] = {
@@ -417,6 +431,34 @@ static void mxs_auart_set_mctrl(struct uart_port *u, unsigned mctrl)
s->ctrl = mctrl;
writel(ctrl, u->membase + AUART_CTRL2);
+
+ mctrl_gpio_set(s->gpios, mctrl);
+}
@@ -429,7 +429,12 @@ static void mxs_auart_set_mctrl(struct uart_port
*u, unsigned mctrl)
ctrl |= AUART_CTRL2_RTS;
}
+#if 0
s->ctrl = mctrl;
+#else
+ s->ctrl &= ~(TIOCM_RTS | TIOCM_DTR);
+ s->ctrl |= mctrl & (TIOCM_RTS | TIOCM_DTR);
+#endif
writel(ctrl, u->membase + AUART_CTRL2);
mctrl_gpio_set(s->gpios, mctrl);
Does tty layer modify mctrl for input lines and code above is required?
best regards
Janusz
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