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drivers: serial: NXP: Enable flow control for uart_mcux_lpuart

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add flow_ctrl filed and give it initialized value
    based on hw_flow_control.
Initialize mcux lpuart based on flow_ctrl

Signed-off-by: Mark Wang <yichang.wang@nxp.com>
This commit is contained in:
Mark Wang 2021-05-24 12:49:53 +08:00 • committed by David Leach
commit 857b8508d0
1 changed files with 5 additions and 2 deletions
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7
drivers/serial/uart_mcux_lpuart.c
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2017, NXP * Copyright (c) 2017,2021 NXP
* Copyright (c) 2020 Softube * Copyright (c) 2020 Softube
* *
* SPDX-License-Identifier: Apache-2.0 * SPDX-License-Identifier: Apache-2.0
@ -19,6 +19,7 @@ struct mcux_lpuart_config {
const struct device *clock_dev; const struct device *clock_dev;
clock_control_subsys_t clock_subsys; clock_control_subsys_t clock_subsys;
uint32_t baud_rate; uint32_t baud_rate;
uint8_t flow_ctrl;
#ifdef CONFIG_UART_INTERRUPT_DRIVEN #ifdef CONFIG_UART_INTERRUPT_DRIVEN
void (*irq_config_func)(const struct device *dev); void (*irq_config_func)(const struct device *dev);
#endif #endif
@ -357,7 +358,7 @@ static int mcux_lpuart_init(const struct device *dev)
uart_api_config->parity = UART_CFG_PARITY_NONE; uart_api_config->parity = UART_CFG_PARITY_NONE;
uart_api_config->stop_bits = UART_CFG_STOP_BITS_1; uart_api_config->stop_bits = UART_CFG_STOP_BITS_1;
uart_api_config->data_bits = UART_CFG_DATA_BITS_8; uart_api_config->data_bits = UART_CFG_DATA_BITS_8;
uart_api_config->flow_ctrl = UART_CFG_FLOW_CTRL_NONE; uart_api_config->flow_ctrl = config->flow_ctrl;
/* set initial configuration */ /* set initial configuration */
mcux_lpuart_configure_init(dev, uart_api_config); mcux_lpuart_configure_init(dev, uart_api_config);
@ -430,6 +431,8 @@ static const struct mcux_lpuart_config mcux_lpuart_##n##_config = { \
.clock_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(n)), \ .clock_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(n)), \
.clock_subsys = (clock_control_subsys_t)DT_INST_CLOCKS_CELL(n, name),\ .clock_subsys = (clock_control_subsys_t)DT_INST_CLOCKS_CELL(n, name),\
.baud_rate = DT_INST_PROP(n, current_speed), \ .baud_rate = DT_INST_PROP(n, current_speed), \
.flow_ctrl = DT_INST_PROP(n, hw_flow_control) ? \
UART_CFG_FLOW_CTRL_RTS_CTS : UART_CFG_FLOW_CTRL_NONE,\
IRQ_FUNC_INIT \ IRQ_FUNC_INIT \
} }