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drivers: uart_imx: add pin control support

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Add pin control support to uart_imx serial driver.

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This commit is contained in:
Daniel DeGrasse 2022-04-25 17:08:46 -05:00 • committed by David Leach
commit c4a7985064
2 changed files with 18 additions and 1 deletions
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11
drivers/serial/uart_imx.c
View file

@ -20,6 +20,7 @@
#include <zephyr/init.h>
#include <zephyr/drivers/uart.h>
#include <uart_imx.h>
#include <drivers/pinctrl.h>
#define UART_STRUCT(dev) \
((UART_Type *)((const struct imx_uart_config *const)(dev)->config)->base)
@ -28,6 +29,7 @@ struct imx_uart_config {
UART_Type *base;
uint32_t baud_rate;
uint8_t modem_mode;
const struct pinctrl_dev_config *pincfg;
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
void (*irq_config_func)(const struct device *dev);
#endif
@ -55,6 +57,7 @@ static int uart_imx_init(const struct device *dev)
UART_Type *uart = UART_STRUCT(dev);
const struct imx_uart_config *config = dev->config;
unsigned int old_level;
int err;
/* disable interrupts */
old_level = irq_lock();
@ -68,6 +71,11 @@ static int uart_imx_init(const struct device *dev)
.direction = uartDirectionTxRx
};
err = pinctrl_apply_state(config->pincfg, PINCTRL_STATE_DEFAULT);
if (err) {
return err;
}
/* Get current module clock frequency */
initConfig.clockRate = get_uart_clock_freq(uart);
@ -283,6 +291,7 @@ static const struct uart_driver_api uart_imx_driver_api = {
.base = (UART_Type *) DT_INST_REG_ADDR(n), \
.baud_rate = DT_INST_PROP(n, current_speed), \
.modem_mode = DT_INST_PROP(n, modem_mode), \
.pincfg = PINCTRL_DT_INST_DEV_CONFIG_GET(n), \
IRQ_FUNC_INIT \
}
@ -312,6 +321,8 @@ static const struct uart_driver_api uart_imx_driver_api = {
\
static const struct imx_uart_config imx_uart_##n##_config; \
\
PINCTRL_DT_INST_DEFINE(n); \
\
DEVICE_DT_INST_DEFINE(n, &uart_imx_init, NULL, \
&imx_uart_##n##_data, &imx_uart_##n##_config, \
PRE_KERNEL_1, \