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refactor(gdma): increase performance and optimize api

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This commit is contained in:
Chen Jichang
2026-08-17 17:02:06 +08:00
parent 2b8029c775
commit e008f5a627
24 changed files with 126 additions and 148 deletions
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components/esp_driver_rmt/src/rmt_rx.c
+3 -4
View File
@@ -33,7 +33,6 @@ static inline void rmt_rx_mount_dma_buffer(rmt_rx_channel_t *rx_chan, const void
.buffer_alignment = mem_alignment,
.flags = {
.mark_final = GDMA_FINAL_LINK_TO_DEFAULT,
.check_size_align = gdma_is_size_alignment_required(rx_chan->base.dma_chan),
}
};
}
@@ -63,9 +62,9 @@ static esp_err_t rmt_rx_init_dma_link(rmt_rx_channel_t *rx_channel, const rmt_rx
ESP_RETURN_ON_ERROR(gdma_register_rx_event_callbacks(rx_channel->base.dma_chan, &cbs, rx_channel), TAG, "register DMA callbacks failed");
// get the alignment requirement from DMA
size_t dma_int_mem_alignment = 0, dma_ext_mem_alignment = 0;
gdma_get_channel_alignment_constraints(rx_channel->base.dma_chan, &dma_int_mem_alignment, &dma_ext_mem_alignment, NULL);
size_t buffer_alignment = MAX(dma_int_mem_alignment, dma_ext_mem_alignment);
gdma_channel_alignment_info_t align_info;
gdma_get_channel_alignment_constraints(rx_channel->base.dma_chan, &align_info);
size_t buffer_alignment = MAX(align_info.int_mem_alignment, align_info.ext_enc_mem_alignment);
rx_channel->num_dma_nodes = esp_dma_calculate_node_count(config->mem_block_symbols * sizeof(rmt_symbol_word_t),
buffer_alignment, DMA_DESCRIPTOR_BUFFER_MAX_SIZE);
rx_channel->num_dma_nodes = MAX(2, rx_channel->num_dma_nodes); // at least 2 DMA nodes for ping-pong
components/esp_driver_rmt/src/rmt_tx.c
+3 -2
View File
@@ -53,9 +53,10 @@ static esp_err_t rmt_tx_init_dma_link(rmt_tx_channel_t *tx_channel, const rmt_tx
// register the DMA callbacks may fail if the interrupt service can not be installed successfully
ESP_RETURN_ON_ERROR(gdma_register_tx_event_callbacks(tx_channel->base.dma_chan, &cbs, tx_channel), TAG, "register DMA callbacks failed");
size_t int_alignment = 0;
gdma_channel_alignment_info_t align_info;
// get the alignment requirement from DMA
gdma_get_channel_alignment_constraints(tx_channel->base.dma_chan, &int_alignment, NULL, NULL);
gdma_get_channel_alignment_constraints(tx_channel->base.dma_chan, &align_info);
size_t int_alignment = align_info.int_mem_alignment;
// apply RMT hardware alignment requirement
int_alignment = MAX(int_alignment, sizeof(rmt_symbol_word_t));
// the memory returned by `heap_caps_aligned_calloc` also meets the cache alignment requirement (both address and size)