ipq806x: switch to upstream usb driver and backport fixes

Also removing fifo-resize property drom DT as it has been removed from the driver.

Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/target/linux/ipq806x/patches-4.4/096-09-usb-dwc3-drop-ev_buffs-array.patch b/target/linux/ipq806x/patches-4.4/096-09-usb-dwc3-drop-ev_buffs-array.patch
new file mode 100644
index 0000000000..64d796cf38
--- /dev/null
+++ b/target/linux/ipq806x/patches-4.4/096-09-usb-dwc3-drop-ev_buffs-array.patch
@@ -0,0 +1,104 @@
+From 696c8b1282205caa5206264449f80ef756f14ef7 Mon Sep 17 00:00:00 2001
+From: Felipe Balbi <felipe.balbi@linux.intel.com>
+Date: Wed, 30 Mar 2016 09:37:03 +0300
+Subject: usb: dwc3: drop ev_buffs array
+
+we will be using a single event buffer and that
+renders ev_buffs array unnecessary. Let's remove it
+in favor of a single pointer to a single event
+buffer.
+
+Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
+---
+ drivers/usb/dwc3/core.c   | 13 ++++---------
+ drivers/usb/dwc3/core.h   |  2 +-
+ drivers/usb/dwc3/gadget.c |  4 ++--
+ 3 files changed, 7 insertions(+), 12 deletions(-)
+
+diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
+index 9e5c57c7..05b7ec3 100644
+--- a/drivers/usb/dwc3/core.c
++++ b/drivers/usb/dwc3/core.c
+@@ -204,7 +204,7 @@ static void dwc3_free_event_buffers(struct dwc3 *dwc)
+ {
+ 	struct dwc3_event_buffer	*evt;
+ 
+-	evt = dwc->ev_buffs[0];
++	evt = dwc->ev_buf;
+ 	if (evt)
+ 		dwc3_free_one_event_buffer(dwc, evt);
+ }
+@@ -221,17 +221,12 @@ static int dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length)
+ {
+ 	struct dwc3_event_buffer *evt;
+ 
+-	dwc->ev_buffs = devm_kzalloc(dwc->dev, sizeof(*dwc->ev_buffs),
+-			GFP_KERNEL);
+-	if (!dwc->ev_buffs)
+-		return -ENOMEM;
+-
+ 	evt = dwc3_alloc_one_event_buffer(dwc, length);
+ 	if (IS_ERR(evt)) {
+ 		dev_err(dwc->dev, "can't allocate event buffer\n");
+ 		return PTR_ERR(evt);
+ 	}
+-	dwc->ev_buffs[0] = evt;
++	dwc->ev_buf = evt;
+ 
+ 	return 0;
+ }
+@@ -246,7 +241,7 @@ static int dwc3_event_buffers_setup(struct dwc3 *dwc)
+ {
+ 	struct dwc3_event_buffer	*evt;
+ 
+-	evt = dwc->ev_buffs[0];
++	evt = dwc->ev_buf;
+ 	dwc3_trace(trace_dwc3_core,
+ 			"Event buf %p dma %08llx length %d\n",
+ 			evt->buf, (unsigned long long) evt->dma,
+@@ -269,7 +264,7 @@ static void dwc3_event_buffers_cleanup(struct dwc3 *dwc)
+ {
+ 	struct dwc3_event_buffer	*evt;
+ 
+-	evt = dwc->ev_buffs[0];
++	evt = dwc->ev_buf;
+ 
+ 	evt->lpos = 0;
+ 
+diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
+index be03999..df72234a 100644
+--- a/drivers/usb/dwc3/core.h
++++ b/drivers/usb/dwc3/core.h
+@@ -753,7 +753,7 @@ struct dwc3 {
+ 	struct platform_device	*xhci;
+ 	struct resource		xhci_resources[DWC3_XHCI_RESOURCES_NUM];
+ 
+-	struct dwc3_event_buffer **ev_buffs;
++	struct dwc3_event_buffer *ev_buf;
+ 	struct dwc3_ep		*eps[DWC3_ENDPOINTS_NUM];
+ 
+ 	struct usb_gadget	gadget;
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index 5e6a495..96dfde0 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -2609,7 +2609,7 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc)
+ 	int left;
+ 	u32 reg;
+ 
+-	evt = dwc->ev_buffs[0];
++	evt = dwc->ev_buf;
+ 	left = evt->count;
+ 
+ 	if (!(evt->flags & DWC3_EVENT_PENDING))
+@@ -2668,7 +2668,7 @@ static irqreturn_t dwc3_check_event_buf(struct dwc3 *dwc)
+ 	u32 count;
+ 	u32 reg;
+ 
+-	evt = dwc->ev_buffs[0];
++	evt = dwc->ev_buf;
+ 
+ 	count = dwc3_readl(dwc->regs, DWC3_GEVNTCOUNT(0));
+ 	count &= DWC3_GEVNTCOUNT_MASK;
+-- 
+cgit v0.12