diff options
Diffstat (limited to 'drivers/tty/serial/stm32-usart.c')
| -rw-r--r-- | drivers/tty/serial/stm32-usart.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 8602ff357321..143300a80090 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -129,9 +129,13 @@ static int stm32_config_rs485(struct uart_port *port, if (rs485conf->flags & SER_RS485_RTS_ON_SEND) { cr3 &= ~USART_CR3_DEP; rs485conf->flags &= ~SER_RS485_RTS_AFTER_SEND; + mctrl_gpio_set(stm32_port->gpios, + stm32_port->port.mctrl & ~TIOCM_RTS); } else { cr3 |= USART_CR3_DEP; rs485conf->flags |= SER_RS485_RTS_AFTER_SEND; + mctrl_gpio_set(stm32_port->gpios, + stm32_port->port.mctrl | TIOCM_RTS); } writel_relaxed(cr3, port->membase + ofs->cr3); @@ -847,9 +851,13 @@ static void stm32_set_termios(struct uart_port *port, struct ktermios *termios, if (rs485conf->flags & SER_RS485_RTS_ON_SEND) { cr3 &= ~USART_CR3_DEP; rs485conf->flags &= ~SER_RS485_RTS_AFTER_SEND; + mctrl_gpio_set(stm32_port->gpios, + stm32_port->port.mctrl & ~TIOCM_RTS); } else { cr3 |= USART_CR3_DEP; rs485conf->flags |= SER_RS485_RTS_AFTER_SEND; + mctrl_gpio_set(stm32_port->gpios, + stm32_port->port.mctrl | TIOCM_RTS); } } else { @@ -1033,8 +1041,9 @@ static struct stm32_port *stm32_of_get_stm32_port(struct platform_device *pdev) if (WARN_ON(id >= STM32_MAX_PORTS)) return NULL; - stm32_ports[id].hw_flow_control = of_property_read_bool(np, - "st,hw-flow-ctrl"); + stm32_ports[id].hw_flow_control = + of_property_read_bool (np, "st,hw-flow-ctrl") /*deprecated*/ || + of_property_read_bool (np, "uart-has-rtscts"); stm32_ports[id].port.line = id; stm32_ports[id].cr1_irq = USART_CR1_RXNEIE; stm32_ports[id].cr3_irq = 0; |