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drivers: serial: uart_gecko: support uart_cfg options

Browse source 
Adde usage of uart_cfg struct and support its options of parity, data
bits, and start bits

Signed-off-by: Yishai Jaffe <yishai1999@gmail.com>
This commit is contained in:
Yishai Jaffe 2024-12-22 19:52:17 +02:00 committed by Benjamin Cabé
parent 2363b6b595
commit 1cbd13cd0e
3 changed files with 291 additions and 88 deletions
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349
drivers/serial/uart_gecko.c
View file

@ -135,12 +135,6 @@ struct uart_gecko_config {
const struct silabs_clock_control_cmu_config clock_cfg;
#else
CMU_Clock_TypeDef clock;
#endif
uint32_t baud_rate;
#ifndef CONFIG_PINCTRL
#ifdef UART_GECKO_HW_FLOW_CONTROL
bool hw_flowcontrol;
#endif /* UART_GECKO_HW_FLOW_CONTROL */
#endif
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
void (*irq_config_func)(const struct device *dev);
@ -166,6 +160,7 @@ struct uart_gecko_config {
};
struct uart_gecko_data {
struct uart_config *uart_cfg;
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
uart_irq_callback_user_data_t callback;
void *cb_data;
@ -402,8 +397,10 @@ static void uart_gecko_init_pins(const struct device *dev)
#endif /* CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION */
#ifdef UART_GECKO_HW_FLOW_CONTROL
const struct uart_gecko_data *data = dev->data;
const struct uart_config *uart_cfg = data->uart_cfg;
/* Configure HW flow control (RTS, CTS) */
if (config->hw_flowcontrol) {
if (uart_cfg->flow_ctrl) {
GPIO_PinModeSet(config->pin_rts.port, config->pin_rts.pin,
config->pin_rts.mode, config->pin_rts.out);
GPIO_PinModeSet(config->pin_cts.port, config->pin_cts.pin,
@ -438,6 +435,149 @@ static void uart_gecko_init_pins(const struct device *dev)
}
#endif /* !CONFIG_PINCTRL */
static inline USART_Parity_TypeDef uart_gecko_cfg2ll_parity(enum uart_config_parity parity)
{
switch (parity) {
case UART_CFG_PARITY_ODD:
return usartOddParity;
case UART_CFG_PARITY_EVEN:
return usartEvenParity;
case UART_CFG_PARITY_NONE:
default:
return usartNoParity;
}
}
static inline enum uart_config_parity uart_gecko_ll2cfg_parity(USART_Parity_TypeDef parity)
{
switch (parity) {
case usartOddParity:
return UART_CFG_PARITY_ODD;
case usartEvenParity:
return UART_CFG_PARITY_EVEN;
case usartNoParity:
default:
return UART_CFG_PARITY_NONE;
}
}
static inline USART_Stopbits_TypeDef uart_gecko_cfg2ll_stopbits(enum uart_config_stop_bits sb)
{
switch (sb) {
case UART_CFG_STOP_BITS_0_5:
return usartStopbits0p5;
case UART_CFG_STOP_BITS_1:
return usartStopbits1;
case UART_CFG_STOP_BITS_2:
return usartStopbits2;
case UART_CFG_STOP_BITS_1_5:
return usartStopbits1p5;
default:
return usartStopbits1;
}
}
static inline enum uart_config_stop_bits uart_gecko_ll2cfg_stopbits(USART_Stopbits_TypeDef sb)
{
switch (sb) {
case usartStopbits0p5:
return UART_CFG_STOP_BITS_0_5;
case usartStopbits1:
return UART_CFG_STOP_BITS_1;
case usartStopbits1p5:
return UART_CFG_STOP_BITS_1_5;
case usartStopbits2:
return UART_CFG_STOP_BITS_2;
default:
return UART_CFG_STOP_BITS_1;
}
}
static inline USART_Databits_TypeDef uart_gecko_cfg2ll_databits(enum uart_config_data_bits db,
enum uart_config_parity p)
{
switch (db) {
case UART_CFG_DATA_BITS_7:
if (p == UART_CFG_PARITY_NONE) {
return usartDatabits7;
} else {
return usartDatabits8;
}
case UART_CFG_DATA_BITS_9:
return usartDatabits9;
case UART_CFG_DATA_BITS_8:
default:
if (p == UART_CFG_PARITY_NONE) {
return usartDatabits8;
} else {
return usartDatabits9;
}
return usartDatabits8;
}
}
static inline enum uart_config_data_bits uart_gecko_ll2cfg_databits(USART_Databits_TypeDef db,
USART_Parity_TypeDef p)
{
switch (db) {
case usartDatabits7:
if (p == usartNoParity) {
return UART_CFG_DATA_BITS_7;
} else {
return UART_CFG_DATA_BITS_6;
}
case usartDatabits9:
if (p == usartNoParity) {
return UART_CFG_DATA_BITS_9;
} else {
return UART_CFG_DATA_BITS_8;
}
case usartDatabits8:
default:
if (p == usartNoParity) {
return UART_CFG_DATA_BITS_8;
} else {
return UART_CFG_DATA_BITS_7;
}
}
}
#if UART_GECKO_HW_FLOW_CONTROL
/**
* @brief Get LL hardware flow control define from
* Zephyr hardware flow control option.
* @note Supports only UART_CFG_FLOW_CTRL_RTS_CTS and UART_CFG_FLOW_CTRL_RS485.
* @param fc: Zephyr hardware flow control option.
* @retval usartHwFlowControlCtsAndRts, or usartHwFlowControlNone.
*/
static inline USART_HwFlowControl_TypeDef uart_gecko_cfg2ll_hwctrl(
enum uart_config_flow_control fc)
{
if (fc == UART_CFG_FLOW_CTRL_RTS_CTS) {
return usartHwFlowControlCtsAndRts;
}
return usartHwFlowControlNone;
}
/**
* @brief Get Zephyr hardware flow control option from
* LL hardware flow control define.
* @note Supports only usartHwFlowControlCtsAndRts.
* @param fc: LL hardware flow control definition.
* @retval UART_CFG_FLOW_CTRL_RTS_CTS, or UART_CFG_FLOW_CTRL_NONE.
*/
static inline enum uart_config_flow_control uart_gecko_ll2cfg_hwctrl(
USART_HwFlowControl_TypeDef fc)
{
if (fc == usartHwFlowControlCtsAndRts) {
return UART_CFG_FLOW_CTRL_RTS_CTS;
}
return UART_CFG_FLOW_CTRL_NONE;
}
#endif
/**
* @brief Main initializer for UART
*
@ -450,6 +590,8 @@ static int uart_gecko_init(const struct device *dev)
int err;
#endif /* CONFIG_PINCTRL */
const struct uart_gecko_config *config = dev->config;
const struct uart_gecko_data *data = dev->data;
const struct uart_config *uart_cfg = data->uart_cfg;
USART_InitAsync_TypeDef usartInit = USART_INITASYNC_DEFAULT;
@ -465,9 +607,12 @@ static int uart_gecko_init(const struct device *dev)
#endif
/* Init USART */
usartInit.baudrate = config->baud_rate;
usartInit.baudrate = uart_cfg->baudrate;
usartInit.parity = uart_gecko_cfg2ll_parity(uart_cfg->parity);
usartInit.stopbits = uart_gecko_cfg2ll_stopbits(uart_cfg->stop_bits);
usartInit.databits = uart_gecko_cfg2ll_databits(uart_cfg->data_bits, uart_cfg->parity);
#ifdef UART_GECKO_HW_FLOW_CONTROL
usartInit.hwFlowControl = config->hw_flowcontrol ?
usartInit.hwFlowControl = uart_cfg->flow_ctrl ?
usartHwFlowControlCtsAndRts : usartHwFlowControlNone;
#endif
USART_InitAsync(config->base, &usartInit);
@ -638,45 +783,52 @@ static DEVICE_API(uart, uart_gecko_driver_api) = {
.pin_rts = PIN_UART_RTS(idx), \
.pin_cts = PIN_UART_CTS(idx),
#define GECKO_UART_HW_FLOW_CONTROL(idx) \
.hw_flowcontrol = DT_INST_PROP(idx, hw_flow_control),
#else /* UART_GECKO_HW_FLOW_CONTROL */
#define GECKO_UART_RTS_CTS_PIN_LOCATIONS(idx)
#define VALIDATE_GECKO_UART_RTS_CTS_PIN_LOCATIONS(idx)
#define GECKO_UART_RTS_CTS_PINS(idx)
#define GECKO_UART_HW_FLOW_CONTROL(idx)
#endif /* UART_GECKO_HW_FLOW_CONTROL */
#define GECKO_UART_INIT(idx) \
VALIDATE_GECKO_UART_RX_TX_PIN_LOCATIONS(idx); \
VALIDATE_GECKO_UART_RTS_CTS_PIN_LOCATIONS(idx); \
\
GECKO_UART_IRQ_HANDLER_DECL(idx); \
\
static const struct uart_gecko_config uart_gecko_cfg_##idx = { \
.base = (USART_TypeDef *)DT_INST_REG_ADDR(idx), \
GET_GECKO_UART_CLOCK(idx) \
.baud_rate = DT_INST_PROP(idx, current_speed), \
GECKO_UART_HW_FLOW_CONTROL(idx) \
GECKO_UART_RX_TX_PINS(idx) \
GECKO_UART_RTS_CTS_PINS(idx) \
GECKO_UART_RX_TX_PIN_LOCATIONS(idx) \
GECKO_UART_RTS_CTS_PIN_LOCATIONS(idx) \
GECKO_UART_IRQ_HANDLER_FUNC(idx) \
}; \
\
static struct uart_gecko_data uart_gecko_data_##idx; \
\
DEVICE_DT_INST_DEFINE(idx, uart_gecko_init, \
NULL, &uart_gecko_data_##idx, \
&uart_gecko_cfg_##idx, PRE_KERNEL_1, \
CONFIG_SERIAL_INIT_PRIORITY, \
&uart_gecko_driver_api); \
\
\
#define GECKO_UART_INIT(idx) \
VALIDATE_GECKO_UART_RX_TX_PIN_LOCATIONS(idx); \
VALIDATE_GECKO_UART_RTS_CTS_PIN_LOCATIONS(idx); \
\
GECKO_UART_IRQ_HANDLER_DECL(idx); \
\
static struct uart_config uart_cfg_##idx = { \
.baudrate = DT_INST_PROP(idx, current_speed), \
.parity = DT_INST_ENUM_IDX(idx, parity), \
.stop_bits = DT_INST_ENUM_IDX(idx, stop_bits), \
.data_bits = DT_INST_ENUM_IDX(idx, data_bits), \
.flow_ctrl = DT_INST_PROP(idx, hw_flow_control) \
? UART_CFG_FLOW_CTRL_RTS_CTS \
: UART_CFG_FLOW_CTRL_NONE, \
}; \
\
static const struct uart_gecko_config uart_gecko_cfg_##idx = { \
.base = (USART_TypeDef *)DT_INST_REG_ADDR(idx), \
GET_GECKO_UART_CLOCK(idx) \
GECKO_UART_RX_TX_PINS(idx) \
GECKO_UART_RTS_CTS_PINS(idx) \
GECKO_UART_RX_TX_PIN_LOCATIONS(idx) \
GECKO_UART_RTS_CTS_PIN_LOCATIONS(idx) \
GECKO_UART_IRQ_HANDLER_FUNC(idx) \
}; \
\
\
static struct uart_gecko_data uart_gecko_data_##idx = { \
.uart_cfg = &uart_cfg_##idx, \
}; \
\
DEVICE_DT_INST_DEFINE(idx, uart_gecko_init, \
NULL, &uart_gecko_data_##idx, \
&uart_gecko_cfg_##idx, PRE_KERNEL_1, \
CONFIG_SERIAL_INIT_PRIORITY, \
&uart_gecko_driver_api); \
\
\
GECKO_UART_IRQ_HANDLER(idx)
DT_INST_FOREACH_STATUS_OKAY(GECKO_UART_INIT)
@ -709,56 +861,77 @@ DT_INST_FOREACH_STATUS_OKAY(GECKO_UART_INIT)
#endif
#ifdef CONFIG_PINCTRL
#define GECKO_USART_INIT(idx) \
PINCTRL_DT_INST_DEFINE(idx); \
GECKO_USART_IRQ_HANDLER_DECL(idx); \
PM_DEVICE_DT_INST_DEFINE(idx, uart_gecko_pm_action); \
\
static const struct uart_gecko_config usart_gecko_cfg_##idx = { \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(idx), \
.base = (USART_TypeDef *)DT_INST_REG_ADDR(idx), \
GET_GECKO_USART_CLOCK(idx) \
.baud_rate = DT_INST_PROP(idx, current_speed), \
GECKO_USART_IRQ_HANDLER_FUNC(idx) \
}; \
\
static struct uart_gecko_data usart_gecko_data_##idx; \
\
DEVICE_DT_INST_DEFINE(idx, uart_gecko_init, PM_DEVICE_DT_INST_GET(idx),\
&usart_gecko_data_##idx, \
&usart_gecko_cfg_##idx, PRE_KERNEL_1, \
CONFIG_SERIAL_INIT_PRIORITY, \
&uart_gecko_driver_api); \
\
#define GECKO_USART_INIT(idx) \
PINCTRL_DT_INST_DEFINE(idx); \
GECKO_USART_IRQ_HANDLER_DECL(idx); \
PM_DEVICE_DT_INST_DEFINE(idx, uart_gecko_pm_action); \
\
static struct uart_config uart_cfg_##idx = { \
.baudrate = DT_INST_PROP(idx, current_speed), \
.parity = DT_INST_ENUM_IDX(idx, parity), \
.stop_bits = DT_INST_ENUM_IDX(idx, stop_bits), \
.data_bits = DT_INST_ENUM_IDX(idx, data_bits), \
.flow_ctrl = DT_INST_PROP(idx, hw_flow_control) \
? UART_CFG_FLOW_CTRL_RTS_CTS \
: UART_CFG_FLOW_CTRL_NONE, \
}; \
\
static const struct uart_gecko_config usart_gecko_cfg_##idx = { \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(idx), \
.base = (USART_TypeDef *)DT_INST_REG_ADDR(idx), \
GET_GECKO_USART_CLOCK(idx) \
GECKO_USART_IRQ_HANDLER_FUNC(idx) \
} ; \
\
static struct uart_gecko_data usart_gecko_data_##idx = { \
.uart_cfg = &uart_cfg_##idx, \
}; \
\
DEVICE_DT_INST_DEFINE(idx, uart_gecko_init, PM_DEVICE_DT_INST_GET(idx), \
&usart_gecko_data_##idx, \
&usart_gecko_cfg_##idx, PRE_KERNEL_1, \
CONFIG_SERIAL_INIT_PRIORITY, \
&uart_gecko_driver_api); \
\
GECKO_USART_IRQ_HANDLER(idx)
#else
#define GECKO_USART_INIT(idx) \
VALIDATE_GECKO_UART_RX_TX_PIN_LOCATIONS(idx); \
VALIDATE_GECKO_UART_RTS_CTS_PIN_LOCATIONS(idx); \
\
GECKO_USART_IRQ_HANDLER_DECL(idx); \
PM_DEVICE_DT_INST_DEFINE(idx, uart_gecko_pm_action); \
\
static const struct uart_gecko_config usart_gecko_cfg_##idx = { \
.base = (USART_TypeDef *)DT_INST_REG_ADDR(idx), \
GET_GECKO_USART_CLOCK(idx) \
.baud_rate = DT_INST_PROP(idx, current_speed), \
GECKO_UART_HW_FLOW_CONTROL(idx) \
GECKO_UART_RX_TX_PINS(idx) \
GECKO_UART_RTS_CTS_PINS(idx) \
GECKO_UART_RX_TX_PIN_LOCATIONS(idx) \
GECKO_UART_RTS_CTS_PIN_LOCATIONS(idx) \
GECKO_USART_IRQ_HANDLER_FUNC(idx) \
}; \
\
static struct uart_gecko_data usart_gecko_data_##idx; \
\
DEVICE_DT_INST_DEFINE(idx, uart_gecko_init, PM_DEVICE_DT_INST_GET(idx),\
&usart_gecko_data_##idx, \
&usart_gecko_cfg_##idx, PRE_KERNEL_1, \
CONFIG_SERIAL_INIT_PRIORITY, \
&uart_gecko_driver_api); \
\
#define GECKO_USART_INIT(idx) \
VALIDATE_GECKO_UART_RX_TX_PIN_LOCATIONS(idx); \
VALIDATE_GECKO_UART_RTS_CTS_PIN_LOCATIONS(idx); \
\
GECKO_USART_IRQ_HANDLER_DECL(idx); \
PM_DEVICE_DT_INST_DEFINE(idx, uart_gecko_pm_action); \
\
static struct uart_config uart_cfg_##idx = { \
.baudrate = DT_INST_PROP(idx, current_speed), \
.parity = DT_INST_ENUM_IDX(idx, parity), \
.stop_bits = DT_INST_ENUM_IDX(idx, stop_bits), \
.data_bits = DT_INST_ENUM_IDX(idx, data_bits), \
.flow_ctrl = DT_INST_PROP(idx, hw_flow_control) \
? UART_CFG_FLOW_CTRL_RTS_CTS \
: UART_CFG_FLOW_CTRL_NONE, \
}; \
\
static const struct uart_gecko_config usart_gecko_cfg_##idx = { \
.base = (USART_TypeDef *)DT_INST_REG_ADDR(idx), \
GET_GECKO_USART_CLOCK(idx) \
GECKO_UART_RX_TX_PINS(idx) \
GECKO_UART_RTS_CTS_PINS(idx) \
GECKO_UART_RX_TX_PIN_LOCATIONS(idx) \
GECKO_UART_RTS_CTS_PIN_LOCATIONS(idx) \
GECKO_USART_IRQ_HANDLER_FUNC(idx) \
}; \
\
static struct uart_gecko_data usart_gecko_data_##idx = { \
.uart_cfg = &uart_cfg_##idx, \
}; \
\
DEVICE_DT_INST_DEFINE(idx, uart_gecko_init, PM_DEVICE_DT_INST_GET(idx), \
&usart_gecko_data_##idx, \
&usart_gecko_cfg_##idx, PRE_KERNEL_1, \
CONFIG_SERIAL_INIT_PRIORITY, \
&uart_gecko_driver_api); \
\
GECKO_USART_IRQ_HANDLER(idx)
#endif

15
dts/bindings/serial/silabs,gecko-uart.yaml
View file

@ -11,6 +11,21 @@ properties:
interrupts:
required: true
current-speed:
description: |
Initial baud rate setting for UART. Defaults to standard baudrate of 115200 if not specified.
default: 115200
stop-bits:
description: |
Sets the number of stop bits. Defaults to standard of 1 if not specified.
default: "1"
data-bits:
description: |
Sets the number of data bits. Defaults to standard of 8 if not specified.
default: 8
peripheral-id:
type: int
required: true

15
dts/bindings/serial/silabs,gecko-usart.yaml
View file

@ -11,6 +11,21 @@ properties:
interrupts:
required: true
current-speed:
description: |
Initial baud rate setting for UART. Defaults to standard baudrate of 115200 if not specified.
default: 115200
stop-bits:
description: |
Sets the number of stop bits. Defaults to standard of 1 if not specified.
default: "1"
data-bits:
description: |
Sets the number of data bits. Defaults to standard of 8 if not specified.
default: 8
peripheral-id:
type: int
description: peripheral ID