drivers: video: video_stm32_dcmi: Add GPDMA support to STM32 DCMI

The STM32 DCMI driver currently supports devices with DMA, but does not
support devices that have GPDMA instead (e.g. STM32H5 line of SoCs). For
all practical purposes, this makes these devices unable to use the DCMI
driver. Adding GPDMA support enables additional devices to use the DCMI
driver, while not restricting the ability of DMA devices to do so as well.

Signed-off-by: Isaac Dekine <[email protected]>

Author: idekine

drivers/video/video_stm32_dcmi.c

@@ -147,6 +147,21 @@ static int stm32_dma_init(const struct device *dev)
 
 	/*** Configure the DMA ***/
 	/* Set the parameters to be configured */
+#if defined(GPDMA1) // GPDMA
+	hdma.Init.Request		= GPDMA1_REQUEST_DCMI;
+	hdma.Init.BlkHWRequest		= DMA_BREQ_SINGLE_BURST;
+	hdma.Init.Direction		= DMA_PERIPH_TO_MEMORY;
+	hdma.Init.SrcInc		= DMA_SINC_FIXED;
+	hdma.Init.DestInc		= DMA_DINC_INCREMENTED;
+	hdma.Init.SrcDataWidth		= DMA_SRC_DATAWIDTH_WORD;
+	hdma.Init.DestDataWidth		= DMA_DEST_DATAWIDTH_WORD;
+	hdma.Init.Priority		= DMA_HIGH_PRIORITY;
+	hdma.Init.SrcBurstLength	= 1;
+	hdma.Init.DestBurstLength	= 1;
+	hdma.Init.TransferAllocatedPort = DMA_SRC_ALLOCATED_PORT0 | DMA_DEST_ALLOCATED_PORT0;
+	hdma.Init.TransferEventMode	= DMA_TCEM_BLOCK_TRANSFER;
+	hdma.Init.Mode			= DMA_NORMAL;
+#else // standard DMA
 	hdma.Init.Request		= DMA_REQUEST_DCMI;
 	hdma.Init.Direction		= DMA_PERIPH_TO_MEMORY;
 	hdma.Init.PeriphInc		= DMA_PINC_DISABLE;
@@ -158,6 +173,7 @@ static int stm32_dma_init(const struct device *dev)
 #if defined(CONFIG_SOC_SERIES_STM32F7X) || defined(CONFIG_SOC_SERIES_STM32H7X)
 	hdma.Init.FIFOMode		= DMA_FIFOMODE_DISABLE;
 #endif
+#endif
 
 #if defined(CONFIG_SOC_SERIES_STM32F7X) || defined(CONFIG_SOC_SERIES_STM32H7X)
 	hdma.Instance = __LL_DMA_GET_STREAM_INSTANCE(config->dma.reg,