usb: dwc3: add dwc3 folder from linux kernel to u-boot
Added dwc3 folder from linux kernel 3.19-rc1 (97bf6af1f9)
to u-boot. This will be adapted to work with u-boot in the
following patches.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
diff --git a/drivers/usb/dwc3/io.h b/drivers/usb/dwc3/io.h
new file mode 100644
index 0000000..6a79c8e
--- /dev/null
+++ b/drivers/usb/dwc3/io.h
@@ -0,0 +1,70 @@
+/**
+ * io.h - DesignWare USB3 DRD IO Header
+ *
+ * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Authors: Felipe Balbi <balbi@ti.com>,
+ * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 of
+ * the License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __DRIVERS_USB_DWC3_IO_H
+#define __DRIVERS_USB_DWC3_IO_H
+
+#include <linux/io.h>
+#include "trace.h"
+#include "debug.h"
+#include "core.h"
+
+static inline u32 dwc3_readl(void __iomem *base, u32 offset)
+{
+ u32 offs = offset - DWC3_GLOBALS_REGS_START;
+ u32 value;
+
+ /*
+ * We requested the mem region starting from the Globals address
+ * space, see dwc3_probe in core.c.
+ * However, the offsets are given starting from xHCI address space.
+ */
+ value = readl(base + offs);
+
+ /*
+ * When tracing we want to make it easy to find the correct address on
+ * documentation, so we revert it back to the proper addresses, the
+ * same way they are described on SNPS documentation
+ */
+ dwc3_trace(trace_dwc3_readl, "addr %p value %08x",
+ base - DWC3_GLOBALS_REGS_START + offset, value);
+
+ return value;
+}
+
+static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value)
+{
+ u32 offs = offset - DWC3_GLOBALS_REGS_START;
+
+ /*
+ * We requested the mem region starting from the Globals address
+ * space, see dwc3_probe in core.c.
+ * However, the offsets are given starting from xHCI address space.
+ */
+ writel(value, base + offs);
+
+ /*
+ * When tracing we want to make it easy to find the correct address on
+ * documentation, so we revert it back to the proper addresses, the
+ * same way they are described on SNPS documentation
+ */
+ dwc3_trace(trace_dwc3_writel, "addr %p value %08x",
+ base - DWC3_GLOBALS_REGS_START + offset, value);
+}
+
+#endif /* __DRIVERS_USB_DWC3_IO_H */