container_of(port, struct uart_amba_port, port);
unsigned int cr;
- if (port->rs485.flags & SER_RS485_ENABLED) {
- if (port->rs485.flags & SER_RS485_RTS_AFTER_SEND)
- mctrl &= ~TIOCM_RTS;
- else
- mctrl |= TIOCM_RTS;
- }
-
cr = pl011_read(uap, REG_CR);
#define TIOCMBIT(tiocmbit, uartbit) \
cr = uap->old_cr & (UART011_CR_RTS | UART011_CR_DTR);
cr |= UART01x_CR_UARTEN | UART011_CR_RXE;
- if (port->rs485.flags & SER_RS485_ENABLED) {
- if (port->rs485.flags & SER_RS485_RTS_AFTER_SEND)
- cr &= ~UART011_CR_RTS;
- else
- cr |= UART011_CR_RTS;
- } else {
+ if (!(port->rs485.flags & SER_RS485_ENABLED))
cr |= UART011_CR_TXE;
- }
pl011_write(cr, uap, REG_CR);
unsigned long flags;
unsigned int old;
+ if (port->rs485.flags & SER_RS485_ENABLED) {
+ set &= ~TIOCM_RTS;
+ clear &= ~TIOCM_RTS;
+ }
+
spin_lock_irqsave(&port->lock, flags);
old = port->mctrl;
port->mctrl = (old & ~clear) | set;
static void uart_port_dtr_rts(struct uart_port *uport, int raise)
{
- int rs485_on = uport->rs485_config &&
- (uport->rs485.flags & SER_RS485_ENABLED);
- int RTS_after_send = !!(uport->rs485.flags & SER_RS485_RTS_AFTER_SEND);
-
- if (raise) {
- if (rs485_on && RTS_after_send) {
- uart_set_mctrl(uport, TIOCM_DTR);
- uart_clear_mctrl(uport, TIOCM_RTS);
- } else {
- uart_set_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
- }
- } else {
- unsigned int clear = TIOCM_DTR;
-
- clear |= (!rs485_on || RTS_after_send) ? TIOCM_RTS : 0;
- uart_clear_mctrl(uport, clear);
- }
+ if (raise)
+ uart_set_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
+ else
+ uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
}
/*
goto out;
if (!tty_io_error(tty)) {
- if (uport->rs485.flags & SER_RS485_ENABLED) {
- set &= ~TIOCM_RTS;
- clear &= ~TIOCM_RTS;
- }
-
uart_update_mctrl(uport, set, clear);
ret = 0;
}
*/
spin_lock_irqsave(&port->lock, flags);
port->mctrl &= TIOCM_DTR;
+ if (port->rs485.flags & SER_RS485_ENABLED &&
+ !(port->rs485.flags & SER_RS485_RTS_AFTER_SEND))
+ port->mctrl |= TIOCM_RTS;
port->ops->set_mctrl(port, port->mctrl);
spin_unlock_irqrestore(&port->lock, flags);