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drivers: serial: stm32: Add wakeup capability support

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Add wakeup capability support.
wip comment

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2022-08-03 14:39:48 +02:00 committed by Fabio Baltieri
parent 3c6648e7ab
commit 4422de5692
2 changed files with 25 additions and 2 deletions
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23
drivers/serial/uart_stm32.c
View file

@ -1675,6 +1675,17 @@ static int uart_stm32_init(const struct device *dev)
config->irq_config_func(dev);
#endif /* CONFIG_PM || CONFIG_UART_INTERRUPT_DRIVEN || CONFIG_UART_ASYNC_API */
#if defined(CONFIG_PM)
if (config->wakeup_source) {
/* Enable ability to wakeup device in Stop mode
* Effect depends on CONFIG_PM_DEVICE status:
* CONFIG_PM_DEVICE=n : Always active
* CONFIG_PM_DEVICE=y : Controlled by pm_device_wakeup_enable()
*/
LL_USART_EnableInStopMode(config->usart);
}
#endif /* CONFIG_PM */
#ifdef CONFIG_UART_ASYNC_API
return uart_stm32_async_init(dev);
#else
@ -1750,6 +1761,13 @@ static void uart_stm32_irq_config_func_##index(const struct device *dev) \
#define UART_DMA_CHANNEL(index, dir, DIR, src, dest)
#endif
#ifdef CONFIG_PM
#define STM32_UART_PM_WAKEUP(index) \
.wakeup_source = DT_INST_PROP(index, wakeup_source),
#else
#define STM32_UART_PM_WAKEUP(index) /* Not used */
#endif
#define STM32_UART_INIT(index) \
STM32_UART_IRQ_HANDLER_DECL(index) \
\
@ -1767,9 +1785,10 @@ static const struct uart_stm32_config uart_stm32_cfg_##index = { \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(index), \
.single_wire = DT_INST_PROP_OR(index, single_wire, false), \
.tx_rx_swap = DT_INST_PROP_OR(index, tx_rx_swap, false), \
.rx_invert = DT_INST_PROP(index, rx_invert), \
.tx_invert = DT_INST_PROP(index, tx_invert), \
.rx_invert = DT_INST_PROP(index, rx_invert), \
.tx_invert = DT_INST_PROP(index, tx_invert), \
STM32_UART_IRQ_HANDLER_FUNC(index) \
STM32_UART_PM_WAKEUP(index) \
}; \
\
static struct uart_stm32_data uart_stm32_data_##index = { \

4
drivers/serial/uart_stm32.h
View file

@ -41,6 +41,10 @@ struct uart_stm32_config {
defined(CONFIG_PM)
uart_irq_config_func_t irq_config_func;
#endif
#if defined(CONFIG_PM)
/* Device defined as wake-up source */
bool wakeup_source;
#endif /* CONFIG_PM */
};
#ifdef CONFIG_UART_ASYNC_API