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drivers: spi: gecko: add support for pinctrl configuration

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This commit adds support for pinctrl configuration in the Gecko SPI
driver.

Signed-off-by: Pawel Czarnecki <pczarnecki@antmicro.com>
This commit is contained in:
Pawel Czarnecki 2022-10-17 15:55:00 +02:00 • committed by Maureen Helm
commit f1d3011ae1
1 changed files with 42 additions and 0 deletions
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42
drivers/spi/spi_gecko.c
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@ -21,9 +21,14 @@ LOG_MODULE_REGISTER(spi_gecko);
#include <stdbool.h>
#ifdef CONFIG_PINCTRL
#include <zephyr/drivers/pinctrl.h>
#else
#ifndef CONFIG_SOC_GECKO_HAS_INDIVIDUAL_PIN_LOCATION
#error "Individual pin location support is required"
#endif
#endif /* CONFIG_PINCTRL */
#define CLOCK_USART(id) _CONCAT(cmuClock_USART, id)
@ -38,12 +43,16 @@ struct spi_gecko_data {
struct spi_gecko_config {
USART_TypeDef *base;
CMU_Clock_TypeDef clock;
#ifdef CONFIG_PINCTRL
const struct pinctrl_dev_config *pcfg;
#else
struct soc_gpio_pin pin_rx;
struct soc_gpio_pin pin_tx;
struct soc_gpio_pin pin_clk;
uint8_t loc_rx;
uint8_t loc_tx;
uint8_t loc_clk;
#endif /* CONFIG_PINCTRL */
};
@ -184,6 +193,7 @@ static void spi_gecko_xfer(const struct device *dev,
spi_context_complete(ctx, dev, 0);
}
#ifndef CONFIG_PINCTRL
static void spi_gecko_init_pins(const struct device *dev)
{
const struct spi_gecko_config *config = dev->config;
@ -208,6 +218,7 @@ static void spi_gecko_init_pins(const struct device *dev)
config->base->ROUTEPEN = USART_ROUTEPEN_RXPEN | USART_ROUTEPEN_TXPEN |
USART_ROUTEPEN_CLKPEN;
}
#endif /* !CONFIG_PINCTRL */
/* API Functions */
@ -241,8 +252,15 @@ static int spi_gecko_init(const struct device *dev)
/* Init USART */
USART_InitSync(config->base, &usartInit);
#ifdef CONFIG_PINCTRL
err = pinctrl_apply_state(config->pcfg, PINCTRL_STATE_DEFAULT);
if (err < 0) {
return err;
}
#else
/* Initialize USART pins */
spi_gecko_init_pins(dev);
#endif /* CONFIG_PINCTRL */
err = spi_context_cs_configure_all(&data->ctx);
if (err < 0) {
@ -300,6 +318,29 @@ static struct spi_driver_api spi_gecko_api = {
.release = spi_gecko_release,
};
#ifdef CONFIG_PINCTRL
#define SPI_INIT2(n, usart) \
PINCTRL_DT_INST_DEFINE(n); \
static struct spi_gecko_data spi_gecko_data_##n = { \
SPI_CONTEXT_INIT_LOCK(spi_gecko_data_##n, ctx), \
SPI_CONTEXT_INIT_SYNC(spi_gecko_data_##n, ctx), \
SPI_CONTEXT_CS_GPIOS_INITIALIZE(DT_DRV_INST(n), ctx) \
}; \
static struct spi_gecko_config spi_gecko_cfg_##n = { \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(n), \
.base = (USART_TypeDef *) \
DT_INST_REG_ADDR(n), \
.clock = CLOCK_USART(usart) \
}; \
DEVICE_DT_INST_DEFINE(n, \
spi_gecko_init, \
NULL, \
&spi_gecko_data_##n, \
&spi_gecko_cfg_##n, \
POST_KERNEL, \
CONFIG_SPI_INIT_PRIORITY, \
&spi_gecko_api);
#else
#define SPI_INIT2(n, usart) \
static struct spi_gecko_data spi_gecko_data_##n = { \
SPI_CONTEXT_INIT_LOCK(spi_gecko_data_##n, ctx), \
@ -331,6 +372,7 @@ static struct spi_driver_api spi_gecko_api = {
POST_KERNEL, \
CONFIG_SPI_INIT_PRIORITY, \
&spi_gecko_api);
#endif /* CONFIG_PINCTRL */
#define SPI_ID(n) DT_INST_PROP(n, peripheral_id)