Add Device Tree match table. Setup dma_mask and coherent_dma_mask
if they're not already set.
Signed-off-by: Al Cooper <alcooperx@xxxxxxxxx>
---
drivers/usb/host/xhci-plat.c | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 51e22bf..60b3ff4 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -14,6 +14,8 @@
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/dma-mapping.h>
#include "xhci.h"
@@ -91,6 +93,16 @@ static int xhci_plat_probe(struct platform_device *pdev)
int ret;
int irq;
+ /*
+ * Right now device-tree probed devices don't get dma_mask set.
+ * Since shared usb code relies on it, set it here for now.
+ * Once we have dma capability bindings this can go away.
+ */
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+ if (!pdev->dev.coherent_dma_mask)
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
if (usb_disabled())
return -ENODEV;
@@ -186,11 +198,17 @@ static int xhci_plat_remove(struct platform_device *dev)
return 0;
}
+static const struct of_device_id usb_xhci_of_match[] = {
+ { .compatible = "xhci-hcd" },
+ {},
+};
+
static struct platform_driver usb_xhci_driver = {
.probe = xhci_plat_probe,
.remove = xhci_plat_remove,
.driver = {
.name = "xhci-hcd",
+ .of_match_table = of_match_ptr(usb_xhci_of_match),
},
};
MODULE_ALIAS("platform:xhci-hcd");
--
1.7.6
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