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authorFelipe Balbi <balbi@ti.com>2012-01-18 18:04:09 +0200
committerFelipe Balbi <balbi@ti.com>2012-02-06 11:48:34 +0200
commit457e84b6624b4d97e6ffae437887ea51a22d54a0 (patch)
treee1ca1503cdda97570fa692589e44a1ca43e72d8b /drivers/usb/dwc3/core.c
parentbb5cfd6811c63c47403e98028bde7e98bd7a1751 (diff)
usb: dwc3: gadget: dynamically re-size TxFifos
We need to dynamically re-size TxFifos for the cases where default values will not do. While at that, we create a simple function which, for now, will just allocate one full packet fifo space for each of the enabled endpoints. This can be improved later in order to allow for better throughput by allocating more space for endpoints which could make good use of that like isochronous and bulk. Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3/core.c')
-rw-r--r--drivers/usb/dwc3/core.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 7c9df630dbe..d119a1fbf94 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -48,6 +48,7 @@
#include <linux/list.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
+#include <linux/of.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
@@ -404,6 +405,7 @@ static void dwc3_core_exit(struct dwc3 *dwc)
static int __devinit dwc3_probe(struct platform_device *pdev)
{
+ struct device_node *node = pdev->dev.of_node;
struct resource *res;
struct dwc3 *dwc;
@@ -469,6 +471,9 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
else
dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
+ if (of_get_property(node, "tx-fifo-resize", NULL))
+ dwc->needs_fifo_resize = true;
+
pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
pm_runtime_forbid(&pdev->dev);