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drivers: spi: stm32 spi drivers supports the frame format

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the stm32 spi drivers now takes the DTS frame_format property
from the include/ drivers/spi.h
It will be possible to select the Motorola (default)
or TI from the DTS entry of the device,
when soc supports it, else a run time error is raised.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2021-12-02 18:27:30 +01:00 • committed by Anas Nashif
commit d65a74e2dd
1 changed files with 15 additions and 5 deletions
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20
drivers/spi/spi_ll_stm32.c
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@ -480,6 +480,21 @@ static int spi_stm32_configure(const struct device *dev,
return -ENOTSUP;
}
/* configure the frame format Motorola (default) or TI */
if ((config->operation & SPI_FRAME_FORMAT_TI) == SPI_FRAME_FORMAT_TI) {
#ifdef LL_SPI_PROTOCOL_TI
LL_SPI_SetStandard(spi, LL_SPI_PROTOCOL_TI);
#else
LOG_ERR("Frame Format TI not supported");
/* on stm32F1 or some stm32L1 (cat1,2) without SPI_CR2_FRF */
return -ENOTSUP;
#endif
#if defined(LL_SPI_PROTOCOL_MOTOROLA) && defined(SPI_CR2_FRF)
} else {
LL_SPI_SetStandard(spi, LL_SPI_PROTOCOL_MOTOROLA);
#endif
}
if (clock_control_get_rate(DEVICE_DT_GET(STM32_CLOCK_CONTROL_NODE),
(clock_control_subsys_t) &cfg->pclken, &clock) < 0) {
LOG_ERR("Failed call clock_control_get_rate");
@ -561,11 +576,6 @@ static int spi_stm32_configure(const struct device *dev,
ll_func_set_fifo_threshold_8bit(spi);
#endif
#if !defined(CONFIG_SOC_SERIES_STM32F1X) \
&& (!defined(CONFIG_SOC_SERIES_STM32L1X) || defined(SPI_CR2_FRF))
LL_SPI_SetStandard(spi, LL_SPI_PROTOCOL_MOTOROLA);
#endif
/* At this point, it's mandatory to set this on the context! */
data->ctx.config = config;