dmaengine: imx-sdma: Add support for version 3 firmware

Currently when version 3.1 of the mx6q SDMA firmware is used we get:

[    0.392169] imx-sdma 20ec000.sdma: unknown firmware version
[    0.399281] imx-sdma 20ec000.sdma: initialized

Add support for it.

Based on a patch from Shengjiu Wang from the internal FSL kernel.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers/dma/imx-sdma.c

@@ -1256,6 +1256,7 @@ static void sdma_issue_pending(struct dma_chan *chan)
 
 #define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1	34
 #define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V2	38
+#define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V3	41
 
 static void sdma_add_scripts(struct sdma_engine *sdma,
 		const struct sdma_script_start_addrs *addr)
@@ -1302,6 +1303,9 @@ static void sdma_load_firmware(const struct firmware *fw, void *context)
 	case 2:
 		sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V2;
 		break;
+	case 3:
+		sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V3;
+		break;
 	default:
 		dev_err(sdma->dev, "unknown firmware version\n");
 		goto err_firmware;

include/linux/platform_data/dma-imx-sdma.h

@@ -48,6 +48,9 @@ struct sdma_script_start_addrs {
 	s32 ssish_2_mcu_addr;
 	s32 hdmi_dma_addr;
 	/* End of v2 array */
+	s32 zcanfd_2_mcu_addr;
+	s32 zqspi_2_mcu_addr;
+	/* End of v3 array */
 };
 
 /**