static int spi_dw_release(struct device *dev, const struct spi_config *config)
{
struct spi_dw_data *spi = dev->driver_data;
if (!spi_context_configured(&spi->ctx, config)) {
return -EINVAL;
}
spi_context_unlock_unconditionally(&spi->ctx);
return 0;
}
static int spi_nrfx_release(struct device *dev,
const struct spi_config *spi_cfg)
{
struct spi_nrfx_data *dev_data = get_dev_data(dev);
if (!spi_context_configured(&dev_data->ctx, spi_cfg)) {
return -EINVAL;
}
spi_context_unlock_unconditionally(&dev_data->ctx);
return 0;
}
static int init_spis(struct device *dev, const nrfx_spis_config_t *config)
{
/* This sets only default values of frequency, mode and bit order.
* The proper ones are set in configure() when a transfer is started.
*/
nrfx_err_t result = nrfx_spis_init(&get_dev_config(dev)->spis,
config,
event_handler,
dev);
if (result != NRFX_SUCCESS) {
LOG_ERR("Failed to initialize device: %s",
dev->config->name);
return -EBUSY;
}
spi_context_unlock_unconditionally(&get_dev_data(dev)->ctx);
return 0;
}
int spi_dw_init(struct device *dev)
{
const struct spi_dw_config *info = dev->config->config_info;
struct spi_dw_data *spi = dev->driver_data;
_clock_config(dev);
_clock_on(dev);
info->config_func();
/* Masking interrupt and making sure controller is disabled */
write_imr(DW_SPI_IMR_MASK, info->regs);
clear_bit_ssienr(info->regs);
LOG_DBG("Designware SPI driver initialized on device: %p", dev);
spi_context_unlock_unconditionally(&spi->ctx);
return 0;
}
