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path: root/drivers/of/platform.c
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Diffstat (limited to 'drivers/of/platform.c')
-rw-r--r--drivers/of/platform.c58
1 files changed, 2 insertions, 56 deletions
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index b189733a1539..a01f57c9e34e 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -19,7 +19,6 @@
#include <linux/slab.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
-#include <linux/of_iommu.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
@@ -150,59 +149,6 @@ struct platform_device *of_device_alloc(struct device_node *np,
}
EXPORT_SYMBOL(of_device_alloc);
-/**
- * of_dma_configure - Setup DMA configuration
- * @dev: Device to apply DMA configuration
- *
- * Try to get devices's DMA configuration from DT and update it
- * accordingly.
- *
- * In case if platform code need to use own special DMA configuration,it
- * can use Platform bus notifier and handle BUS_NOTIFY_ADD_DEVICE event
- * to fix up DMA configuration.
- */
-static void of_dma_configure(struct device *dev)
-{
- u64 dma_addr, paddr, size;
- int ret;
- bool coherent;
- unsigned long offset;
- struct iommu_ops *iommu;
-
- /*
- * Set default dma-mask to 32 bit. Drivers are expected to setup
- * the correct supported dma_mask.
- */
- dev->coherent_dma_mask = DMA_BIT_MASK(32);
-
- /*
- * Set it to coherent_dma_mask by default if the architecture
- * code has not set it.
- */
- if (!dev->dma_mask)
- dev->dma_mask = &dev->coherent_dma_mask;
-
- ret = of_dma_get_range(dev->of_node, &dma_addr, &paddr, &size);
- if (ret < 0) {
- dma_addr = offset = 0;
- size = dev->coherent_dma_mask;
- } else {
- offset = PFN_DOWN(paddr - dma_addr);
- dev_dbg(dev, "dma_pfn_offset(%#08lx)\n", offset);
- }
- dev->dma_pfn_offset = offset;
-
- coherent = of_dma_is_coherent(dev->of_node);
- dev_dbg(dev, "device is%sdma coherent\n",
- coherent ? " " : " not ");
-
- iommu = of_iommu_configure(dev);
- dev_dbg(dev, "device is%sbehind an iommu\n",
- iommu ? " " : " not ");
-
- arch_setup_dma_ops(dev, dma_addr, size, iommu, coherent);
-}
-
static void of_dma_deconfigure(struct device *dev)
{
arch_teardown_dma_ops(dev);
@@ -236,7 +182,7 @@ static struct platform_device *of_platform_device_create_pdata(
dev->dev.bus = &platform_bus_type;
dev->dev.platform_data = platform_data;
- of_dma_configure(&dev->dev);
+ of_dma_configure(&dev->dev, dev->dev.of_node);
if (of_device_add(dev) != 0) {
of_dma_deconfigure(&dev->dev);
@@ -299,7 +245,7 @@ static struct amba_device *of_amba_device_create(struct device_node *node,
dev_set_name(&dev->dev, "%s", bus_id);
else
of_device_make_bus_id(&dev->dev);
- of_dma_configure(&dev->dev);
+ of_dma_configure(&dev->dev, dev->dev.of_node);
/* Allow the HW Peripheral ID to be overridden */
prop = of_get_property(node, "arm,primecell-periphid", NULL);