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drivers: serial: rpi_pico: added reset support for UART devices

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added reset controller for Raspberry Pi Pico UART devices

Signed-off-by: Andrei-Edward Popa <andrei.popa105@yahoo.com>
This commit is contained in:
Andrei-Edward Popa 2022-03-22 02:25:39 +02:00 • committed by Carles Cufí
commit 12fa630844
2 changed files with 5 additions and 1 deletions
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1
drivers/serial/Kconfig.rpi_pico
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@ -10,3 +10,4 @@ config UART_RPI_PICO
select SERIAL_HAS_DRIVER select SERIAL_HAS_DRIVER
select PICOSDK_USE_UART select PICOSDK_USE_UART
select SERIAL_SUPPORT_INTERRUPT select SERIAL_SUPPORT_INTERRUPT
depends on RESET

5
drivers/serial/uart_rpi_pico.c
View file

@ -6,6 +6,7 @@
*/ */
#include <drivers/uart.h> #include <drivers/uart.h>
#include <drivers/reset.h>
#include <drivers/pinctrl.h> #include <drivers/pinctrl.h>
/* pico-sdk includes */ /* pico-sdk includes */
@ -17,6 +18,7 @@ struct uart_rpi_config {
uart_inst_t *const uart_dev; uart_inst_t *const uart_dev;
uart_hw_t *const uart_regs; uart_hw_t *const uart_regs;
const struct pinctrl_dev_config *pcfg; const struct pinctrl_dev_config *pcfg;
const struct reset_dt_spec reset;
#ifdef CONFIG_UART_INTERRUPT_DRIVEN #ifdef CONFIG_UART_INTERRUPT_DRIVEN
uart_irq_config_func_t irq_config_func; uart_irq_config_func_t irq_config_func;
#endif /* CONFIG_UART_INTERRUPT_DRIVEN */ #endif /* CONFIG_UART_INTERRUPT_DRIVEN */
@ -70,7 +72,7 @@ static int uart_rpi_init(const struct device *dev)
/* /*
* uart_init() may be replaced by register based API once rpi-pico platform * uart_init() may be replaced by register based API once rpi-pico platform
* has a clock controller driver and a reset controller driver * has a clock controller driver
*/ */
baudrate = uart_init(uart_inst, data->baudrate); baudrate = uart_init(uart_inst, data->baudrate);
/* Check if baudrate adjustment returned by 'uart_init' function is a positive value */ /* Check if baudrate adjustment returned by 'uart_init' function is a positive value */
@ -302,6 +304,7 @@ static const struct uart_driver_api uart_rpi_driver_api = {
.uart_dev = uart##idx, \ .uart_dev = uart##idx, \
.uart_regs = (uart_hw_t *)uart##idx, \ .uart_regs = (uart_hw_t *)uart##idx, \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(idx), \ .pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(idx), \
.reset = RESET_DT_SPEC_INST_GET(idx), \
RPI_UART_IRQ_CONFIG_INIT(idx), \ RPI_UART_IRQ_CONFIG_INIT(idx), \
}; \ }; \
\ \