fsldma: add support to 36-bit physical address
Li Yang [Thu, 11 Nov 2010 12:16:29 +0000 (20:16 +0800)]
Expand the dma_mask of fsldma device to 36-bit, indicating that the
DMA engine can deal with 36-bit physical address and does not need
the SWIOTLB to create bounce buffer for it when doing dma_map_*().

Signed-off-by: Li Yang <leoli@freescale.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/dma/fsldma.c

index 286c3ac..531230b 100644 (file)
@@ -1,7 +1,7 @@
 /*
  * Freescale MPC85xx, MPC83xx DMA Engine support
  *
- * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
+ * Copyright (C) 2007-2010 Freescale Semiconductor, Inc. All rights reserved.
  *
  * Author:
  *   Zhang Wei <wei.zhang@freescale.com>, Jul 2007
@@ -1322,6 +1322,8 @@ static int __devinit fsldma_of_probe(struct platform_device *op,
        fdev->common.device_control = fsl_dma_device_control;
        fdev->common.dev = &op->dev;
 
+       dma_set_mask(&(op->dev), DMA_BIT_MASK(36));
+
        dev_set_drvdata(&op->dev, fdev);
 
        /*