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>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 18c0a131e4e4..eb10109c55ad 100644
--- a/drivers/dma/imx-sdma.c
+++ b/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;