imx8m: add support for SDMA2 and SAI1

Add SDMA2 and SAI1 related info.

Signed-off-by: Viorel Suman <viorel.suman@nxp.com>

src/platform/imx8m/include/platform/lib/dma.h

@@ -10,7 +10,7 @@
 #ifndef __PLATFORM_LIB_DMA_H__
 #define __PLATFORM_LIB_DMA_H__
 
-#define PLATFORM_NUM_DMACS	2
+#define PLATFORM_NUM_DMACS	3
 
 /* max number of supported DMA channels */
 #define PLATFORM_MAX_DMA_CHAN	32

src/platform/imx8m/include/platform/lib/memory.h

@@ -41,6 +41,9 @@
 #define SDMA3_BASE	0x30e00000
 #define SDMA3_SIZE	0x10000
 
+#define SAI_1_BASE	0x30c10000
+#define SAI_1_SIZE	0x00010000
+
 #define SAI_3_BASE	0x30c30000
 #define SAI_3_SIZE	0x00010000
 

src/platform/imx8m/lib/dai.c

@@ -14,6 +14,24 @@
 #include <ipc/stream.h>
 
 static SHARED_DATA struct dai sai[] = {
+{
+	.index = 1,
+	.plat_data = {
+		.base = SAI_1_BASE,
+		.fifo[SOF_IPC_STREAM_PLAYBACK] = {
+			.offset = SAI_1_BASE + REG_SAI_TDR0,
+			.depth = 128, /* in 4 bytes words */
+			/* Handshake is SDMA hardware event */
+			.handshake = 1,
+		},
+		.fifo[SOF_IPC_STREAM_CAPTURE] = {
+			.offset = SAI_1_BASE + REG_SAI_RDR0,
+			.depth = 128, /* in 4 bytes words */
+			.handshake = 0,
+		},
+	},
+	.drv = &sai_driver,
+},
 {
 	.index = 3,
 	.plat_data = {

src/platform/imx8m/lib/dma.c

@@ -24,6 +24,21 @@ SHARED_DATA struct dma dma[PLATFORM_NUM_DMACS] = {
 	},
 	.ops	= &dummy_dma_ops,
 },
+{
+	.plat_data = {
+		.id		= DMA_ID_SDMA2,
+		/* Note: support is available for MEM_TO_MEM but not
+		 * enabled as it is unneeded
+		 */
+		.dir		= DMA_DIR_MEM_TO_DEV | DMA_DIR_DEV_TO_MEM,
+		.devs		= DMA_DEV_SAI,
+		.base		= SDMA2_BASE,
+		.channels	= 32,
+		.irq		= SDMA2_IRQ,
+		.irq_name	= SDMA2_IRQ_NAME,
+	},
+	.ops	= &sdma_ops,
+},
 {
 	.plat_data = {
 		.id		= DMA_ID_SDMA3,

src/platform/imx8m/platform.c

@@ -173,7 +173,8 @@ int platform_init(struct sof *sof)
 	/* Init SDMA platform domain */
 	sof->platform_dma_domain =
 		dma_multi_chan_domain_init(&sof->dma_info->dma_array[1],
-					   1, PLATFORM_DEFAULT_CLOCK, true);
+					   PLATFORM_NUM_DMACS - 1,
+					   PLATFORM_DEFAULT_CLOCK, true);
 
 	/* i.MX platform DMA domain will be full synchronous, no time dependent */
 	sof->platform_dma_domain->full_sync = true;