drivers: dma: Refactor drivers to use shared init priority

Refactors all of the DMA drivers to use a shared driver class
initialization priority configuration, CONFIG_DMA_INIT_PRIORITY, to
allow configuring DMA drivers separately from other devices. This is
similar to other driver classes like I2C and SPI.

Most drivers previously used CONFIG_KERNEL_INIT_PRIORITY_DEFAULT or
CONFIG_KERNEL_INIT_PRIORITY_DEVICE, therefore the default for this new
option is the lower of the two, which means earlier initialization.

Signed-off-by: Maureen Helm <maureen.helm@intel.com>

drivers/dma/Kconfig

@@ -16,6 +16,12 @@ config DMA_64BIT
 	  When this option is true, 64 bit source and dest
 	  DMA addresses are supported.
 
+config DMA_INIT_PRIORITY
+	int "DMA init priority"
+	default KERNEL_INIT_PRIORITY_DEFAULT
+	help
+	  DMA driver device initialization priority.
+
 module = DMA
 module-str = dma
 source "subsys/logging/Kconfig.template.log_config"

drivers/dma/dma_dw.c

@@ -413,7 +413,7 @@ static const struct dma_driver_api dw_dma_driver_api = {
 			    NULL,					\
 			    &dw_dma##inst##_data,			\
 			    &dw_dma##inst##_config, POST_KERNEL,	\
-			    CONFIG_KERNEL_INIT_PRIORITY_DEVICE,		\
+			    CONFIG_DMA_INIT_PRIORITY,			\
 			    &dw_dma_driver_api);			\
 									\
 	static void dw_dma##inst##_irq_config(void)			\

drivers/dma/dma_iproc_pax_v1.c

@@ -995,5 +995,5 @@ DEVICE_DT_INST_DEFINE(0,
 		    &pax_dma_data,
 		    &pax_dma_cfg,
 		    POST_KERNEL,
-		    CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
+		    CONFIG_DMA_INIT_PRIORITY,
 		    &pax_dma_driver_api);

drivers/dma/dma_iproc_pax_v2.c

@@ -1111,5 +1111,5 @@ DEVICE_DT_INST_DEFINE(0,
 		    &pax_dma_data,
 		    &pax_dma_cfg,
 		    POST_KERNEL,
-		    CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
+		    CONFIG_DMA_INIT_PRIORITY,
 		    &pax_dma_driver_api);

drivers/dma/dma_mcux_edma.c

@@ -456,7 +456,7 @@ struct dma_mcux_edma_data dma_data;
  */
 DEVICE_DT_INST_DEFINE(0, &dma_mcux_edma_init, NULL,
 		    &dma_data, &dma_config_0, POST_KERNEL,
-		    CONFIG_KERNEL_INIT_PRIORITY_DEVICE, &dma_mcux_edma_api);
+		    CONFIG_DMA_INIT_PRIORITY, &dma_mcux_edma_api);
 
 void dma_imx_config_func_0(const struct device *dev)
 {

drivers/dma/dma_mcux_lpc.c

@@ -561,7 +561,7 @@ static const struct dma_mcux_lpc_config dma_##n##_config = {	\
 			    &dma_mcux_lpc_init,				\
 			    NULL,					\
 			    &dma_data_##n, &dma_##n##_config,\
-			    POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,\
+			    POST_KERNEL, CONFIG_DMA_INIT_PRIORITY,	\
 			    &dma_mcux_lpc_api);			\
 									\
 	DMA_MCUX_LPC_CONFIG_FUNC(n)				\

drivers/dma/dma_nios2_msgdma.c

@@ -235,4 +235,4 @@ static struct nios2_msgdma_dev_cfg dma0_nios2_config = {
 
 DEVICE_DT_INST_DEFINE(0, &nios2_msgdma0_initialize,
 		NULL, NULL, &dma0_nios2_config, POST_KERNEL,
-		CONFIG_KERNEL_INIT_PRIORITY_DEVICE, &nios2_msgdma_driver_api);
+		CONFIG_DMA_INIT_PRIORITY, &nios2_msgdma_driver_api);

drivers/dma/dma_pl330.c

@@ -590,5 +590,5 @@ static struct dma_pl330_dev_data pl330_data;
 
 DEVICE_DT_INST_DEFINE(0, &dma_pl330_initialize, NULL,
 		    &pl330_data, &pl330_config,
-		    POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
+		    POST_KERNEL, CONFIG_DMA_INIT_PRIORITY,
 		    &pl330_driver_api);

drivers/dma/dma_sam0.c

@@ -459,4 +459,4 @@ static const struct dma_driver_api dma_sam0_api = {
 
 DEVICE_DT_INST_DEFINE(0, &dma_sam0_init, NULL,
 		    &dmac_data, NULL, PRE_KERNEL_1,
-		    CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, &dma_sam0_api);
+		    CONFIG_DMA_INIT_PRIORITY, &dma_sam0_api);

drivers/dma/dma_sam_xdmac.c

@@ -380,4 +380,4 @@ static struct sam_xdmac_dev_data dma0_sam_data;
 
 DEVICE_DT_INST_DEFINE(0, &sam_xdmac_initialize, NULL,
 		    &dma0_sam_data, &dma0_sam_config, POST_KERNEL,
-		    CONFIG_KERNEL_INIT_PRIORITY_DEVICE, &sam_xdmac_driver_api);
+		    CONFIG_DMA_INIT_PRIORITY, &sam_xdmac_driver_api);

drivers/dma/dma_stm32.c

@@ -682,7 +682,7 @@ DEVICE_DT_INST_DEFINE(index,						\
 		    &dma_stm32_init,					\
 		    NULL,						\
 		    &dma_stm32_data_##index, &dma_stm32_config_##index,	\
-		    PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,	\
+		    PRE_KERNEL_1, CONFIG_DMA_INIT_PRIORITY,		\
 		    &dma_funcs)
 
 #ifdef CONFIG_DMA_STM32_SHARED_IRQS

drivers/dma/dmamux_stm32.c

@@ -316,7 +316,7 @@ DEVICE_DT_INST_DEFINE(index,						\
 		    &dmamux_stm32_init,					\
 		    NULL,						\
 		    &dmamux_stm32_data_##index, &dmamux_stm32_config_##index,\
-		    PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,	\
+		    PRE_KERNEL_1, CONFIG_DMA_INIT_PRIORITY,		\
 		    &dma_funcs);
 
 DT_INST_FOREACH_STATUS_OKAY(DMAMUX_INIT)