136 static inline periph_module_t get_dma_periph(int dma_chan)  in get_dma_periph()  argument
138     assert(dma_chan >= 1 && dma_chan <= SOC_SPI_DMA_CHAN_NUM);  in get_dma_periph()
140     if (dma_chan == 1) {  in get_dma_periph()
142     } else if (dma_chan == 2) {  in get_dma_periph()
152 static bool claim_dma_chan(int dma_chan, uint32_t *out_actual_dma_chan)  in claim_dma_chan()  argument
157     bool is_used = (BIT(dma_chan) & spi_dma_chan_enabled);  in claim_dma_chan()
159         spi_dma_chan_enabled |= BIT(dma_chan);  in claim_dma_chan()
160         periph_module_enable(get_dma_periph(dma_chan));  in claim_dma_chan()
161         *out_actual_dma_chan = dma_chan;  in claim_dma_chan()
169 static void connect_spi_and_dma(spi_host_device_t host, int dma_chan)  in connect_spi_and_dma()  argument
172     DPORT_SET_PERI_REG_BITS(DPORT_SPI_DMA_CHAN_SEL_REG, 3, dma_chan, (host * 2));  in connect_spi_and_dma()
178 static esp_err_t alloc_dma_chan(spi_host_device_t host_id, spi_dma_chan_t dma_chan, uint32_t *out_a…  in alloc_dma_chan()  argument
182     assert(dma_chan > SPI_DMA_DISABLED && dma_chan <= SPI_DMA_CH_AUTO);  in alloc_dma_chan()
184     assert(dma_chan == (int)host_id || dma_chan == SPI_DMA_CH_AUTO);  in alloc_dma_chan()
191     if (dma_chan == SPI_DMA_CH_AUTO) {  in alloc_dma_chan()
204         success = claim_dma_chan((int)dma_chan, &actual_dma_chan);  in alloc_dma_chan()
221 static esp_err_t alloc_dma_chan(spi_host_device_t host_id, spi_dma_chan_t dma_chan, uint32_t *out_a…  in alloc_dma_chan()  argument
224     assert(dma_chan == SPI_DMA_CH_AUTO);  in alloc_dma_chan()
229     if (dma_chan == SPI_DMA_CH_AUTO) {  in alloc_dma_chan()
266 esp_err_t spicommon_dma_chan_alloc(spi_host_device_t host_id, spi_dma_chan_t dma_chan, uint32_t *ou…  in spicommon_dma_chan_alloc()  argument
270     assert(dma_chan > SPI_DMA_DISABLED && dma_chan <= SPI_DMA_CH_AUTO);  in spicommon_dma_chan_alloc()
272     assert(dma_chan == (int)host_id || dma_chan == SPI_DMA_CH_AUTO);  in spicommon_dma_chan_alloc()
286     ret = alloc_dma_chan(host_id, dma_chan, &actual_tx_dma_chan, &actual_rx_dma_chan);  in spicommon_dma_chan_alloc()
330     int dma_chan = ctx->bus_attr.tx_dma_chan;  in dma_chan_free()  local
331     assert(spi_dma_chan_enabled & BIT(dma_chan));  in dma_chan_free()
334     spi_dma_chan_enabled &= ~BIT(dma_chan);  in dma_chan_free()
335     periph_module_disable(get_dma_periph(dma_chan));  in dma_chan_free()
759 …_initialize(spi_host_device_t host_id, const spi_bus_config_t *bus_config, spi_dma_chan_t dma_chan)  in spi_bus_initialize()  argument
770 …SPI_CHECK(dma_chan >= SPI_DMA_DISABLED && dma_chan <= SPI_DMA_CH_AUTO, "invalid dma channel", ESP_…  in spi_bus_initialize()
772 …SPI_CHECK( dma_chan == SPI_DMA_DISABLED || dma_chan == (int)host_id || dma_chan == SPI_DMA_CH_AUTO…  in spi_bus_initialize()
774 …SPI_CHECK( dma_chan == SPI_DMA_DISABLED || dma_chan == SPI_DMA_CH_AUTO, "invalid dma channel, chip…  in spi_bus_initialize()
795     if (dma_chan != SPI_DMA_DISABLED) {  in spi_bus_initialize()
798         err = alloc_dma_chan(host_id, dma_chan, &actual_tx_dma_chan, &actual_rx_dma_chan);  in spi_bus_initialize()