2022-02-03 23:01:43

by Erwan Le Ray

[permalink] [raw]
Subject: [PATCH 2/2] serial: stm32: enable / disable wake irqs for mcrtl_gpio wakeup sources

Enable mctrl_gpio wake_irq if device_may_wakeup when usart is suspended,
and disable mctrl_gpios wake_irq if device_may_wakeup when usart is
resumed.

Signed-off-by: Erwan Le Ray <[email protected]>

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 3244e7f6818c..df86c53e62a7 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -1708,6 +1708,7 @@ static int __maybe_unused stm32_usart_serial_en_wakeup(struct uart_port *port,
if (enable) {
stm32_usart_set_bits(port, ofs->cr1, USART_CR1_UESM);
stm32_usart_set_bits(port, ofs->cr3, USART_CR3_WUFIE);
+ mctrl_gpio_enable_irq_wake(stm32_port->gpios);

/*
* When DMA is used for reception, it must be disabled before
@@ -1734,7 +1735,7 @@ static int __maybe_unused stm32_usart_serial_en_wakeup(struct uart_port *port,
if (ret)
return ret;
}
-
+ mctrl_gpio_disable_irq_wake(stm32_port->gpios);
stm32_usart_clr_bits(port, ofs->cr1, USART_CR1_UESM);
stm32_usart_clr_bits(port, ofs->cr3, USART_CR3_WUFIE);
}
--
2.17.1