(nuttx) branch master updated: Deinitialize ESP32-S3 SPI slave GDMA engine

[xiaoxiang]

This is an automated email from the ASF dual-hosted git repository.

xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git


The following commit(s) were added to refs/heads/master by this push:
     new d2b4734756 Deinitialize ESP32-S3 SPI slave GDMA engine
d2b4734756 is described below

commit d2b473475671a2ae0d59c0f9cd2de422e5b3e0f1
Author: nuttxs <zhaoqing.zh...@sony.com>
AuthorDate: Thu Feb 22 18:05:25 2024 +0800

    Deinitialize ESP32-S3 SPI slave GDMA engine
---
 arch/xtensa/src/esp32s3/esp32s3_spi_slave.c | 31 ++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/arch/xtensa/src/esp32s3/esp32s3_spi_slave.c 
b/arch/xtensa/src/esp32s3/esp32s3_spi_slave.c
index cc875bffef..a763563a3b 100644
--- a/arch/xtensa/src/esp32s3/esp32s3_spi_slave.c
+++ b/arch/xtensa/src/esp32s3/esp32s3_spi_slave.c
@@ -1150,6 +1150,35 @@ void spislave_dma_init(struct spislave_priv_s *priv)
 
   resetbits(SPI_RX_EOF_EN_M, SPI_DMA_CONF_REG(priv->config->id));
 }
+
+/****************************************************************************
+ * Name: spislave_dma_deinit
+ *
+ * Description:
+ *   Deinitialize ESP32-S3 SPI slave GDMA engine.
+ *
+ * Input Parameters:
+ *   dev - Device-specific state data
+ *
+ * Returned Value:
+ *   None.
+ *
+ ****************************************************************************/
+
+void spislave_dma_deinit(struct spislave_priv_s *priv)
+{
+  /* Release a DMA channel from peripheral */
+
+  esp32s3_dma_release(priv->dma_channel);
+
+  /* Deinitialize DMA controller */
+
+  esp32s3_dma_deinit();
+
+  /* Disable DMA clock for the SPI peripheral */
+
+  modifyreg32(SYSTEM_PERIP_CLK_EN0_REG, priv->config->dma_clk_bit, 0);
+}
 #endif
 
 /****************************************************************************
@@ -1390,7 +1419,7 @@ static void spislave_deinitialize(struct 
spi_slave_ctrlr_s *ctrlr)
   resetbits(SPI_TRANS_DONE_INT_ENA_M, SPI_DMA_INT_ENA_REG(priv->config->id));
 
 #ifdef CONFIG_ESP32S3_SPI_DMA
-  resetbits(priv->config->dma_clk_bit, SYSTEM_PERIP_CLK_EN0_REG);
+  spislave_dma_deinit(priv);
   priv->rx_dma_offset = 0;
 #endif