USB: dwc3: Dump all relevant core and PHY registers for Erratic error event
DWC3 controller will generate Erratic event if PHY doesn't respond to
PHY command sent by core within stipulated time. In normal case, this
should not happen. Hence dump all relevant core and QSCRATCH registers
to figure out the reason for this Erratic event.
CRs-Fixed: 515005
Change-Id: I02380885a401d9686a542faad16c29e25ac8964f
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index db6fec9..60673d8 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -473,6 +473,20 @@
dwc3_gadget_restart(dwc);
}
+static void (*notify_event) (struct dwc3 *, unsigned);
+void dwc3_set_notifier(void (*notify)(struct dwc3 *, unsigned))
+{
+ notify_event = notify;
+}
+EXPORT_SYMBOL(dwc3_set_notifier);
+
+void dwc3_notify_event(struct dwc3 *dwc, unsigned event)
+{
+ if (dwc->notify_event)
+ dwc->notify_event(dwc, event);
+}
+EXPORT_SYMBOL(dwc3_notify_event);
+
#define DWC3_ALIGN_MASK (16 - 1)
static u64 dwc3_dma_mask = DMA_BIT_MASK(64);
@@ -504,6 +518,7 @@
if (!dev->coherent_dma_mask)
dev->coherent_dma_mask = DMA_BIT_MASK(64);
+ dwc->notify_event = notify_event;
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
dev_err(dev, "missing IRQ\n");