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drivers: spi: gecko: usart: Support CS active high and LSB first

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Enable SPI flags that are easily supportable by hardware.

Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>
This commit is contained in:
Aksel Skauge Mellbye 2024-12-18 15:05:42 +01:00 committed by Benjamin Cabé
parent 532830a1b7
commit c6689a7943
1 changed files with 7 additions and 4 deletions
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11
drivers/spi/spi_gecko_usart.c
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@ -119,6 +119,7 @@ static int spi_config(const struct device *dev,
{
const struct spi_gecko_config *gecko_config = dev->config;
struct spi_gecko_data *data = dev->data;
mem_addr_t ctrl_reg = (mem_addr_t)&gecko_config->base->CTRL;
uint32_t spi_frequency;
#ifdef CONFIG_CLOCK_CONTROL
@ -147,8 +148,9 @@ static int spi_config(const struct device *dev,
}
if (config->operation & SPI_CS_ACTIVE_HIGH) {
LOG_ERR("CS active high not supported");
return -ENOTSUP;
sys_set_bit(ctrl_reg, _USART_CTRL_CSINV_SHIFT);
} else {
sys_clear_bit(ctrl_reg, _USART_CTRL_CSINV_SHIFT);
}
if (config->operation & SPI_LOCK_ON) {
@ -163,8 +165,9 @@ static int spi_config(const struct device *dev,
}
if (config->operation & SPI_TRANSFER_LSB) {
LOG_ERR("LSB first not supported");
return -ENOTSUP;
sys_clear_bit(ctrl_reg, _USART_CTRL_MSBF_SHIFT);
} else {
sys_set_bit(ctrl_reg, _USART_CTRL_MSBF_SHIFT);
}
if (config->operation & SPI_OP_MODE_SLAVE) {