bool spicommon_dma_chan_free(int dma_chan)
{
assert( dma_chan == 1 || dma_chan == 2 );
assert( spi_dma_chan_enabled & DMA_CHANNEL_ENABLED(dma_chan) );
portENTER_CRITICAL(&spi_dma_spinlock);
spi_dma_chan_enabled &= ~DMA_CHANNEL_ENABLED(dma_chan);
if ( spi_dma_chan_enabled == 0 ) {
//disable the DMA only when all the channels are freed.
periph_module_disable( PERIPH_SPI_DMA_MODULE );
}
portEXIT_CRITICAL(&spi_dma_spinlock);
return true;
}
esp_err_t esp_phy_rf_deinit(void)
{
assert((s_phy_rf_init_count <= 2) && (s_phy_rf_init_count >= 1));
_lock_acquire(&s_phy_rf_init_lock);
if (s_phy_rf_init_count == 1) {
// Disable PHY and RF.
phy_close_rf();
// Disable WiFi/BT common peripheral clock. Do not disable clock for hardware RNG
periph_module_disable(PERIPH_WIFI_BT_COMMON_MODULE);
} else {
#if CONFIG_SW_COEXIST_ENABLE
coex_deinit();
#endif
}
s_phy_rf_init_count--;
_lock_release(&s_phy_rf_init_lock);
return ESP_OK;
}
//Returns true if this peripheral is successfully freed, false if otherwise.
bool spicommon_periph_free(spi_host_device_t host)
{
bool ret = __sync_bool_compare_and_swap(&spi_periph_claimed[host], true, false);
if (ret) periph_module_disable(io_signal[host].module);
return ret;
}
