[U-Boot] [PATCH 1/4] usb : OMAP3 : Adding TI OMAP3 platform specific USB support

[Thomas Abraham]

Adding TI OMAP3 platform specific USB functionality for
enabling and disabling of Mentor USB OTG controller module.
This functionality will be used by the Mentor USB Host
controller driver.

Signed-off-by: Ravi Babu <ravibabu at ti.com>
Signed-off-by: Swaminathan S <swami.iyer at ti.com>
Signed-off-by: Thomas Abraham <t-abraham at ti.com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta at ti.com>
---
 drivers/usb/Makefile       |    1 +
 drivers/usb/omap3530_usb.c |   66 ++++++++++++++++++++++++++++++++++++++++++++
 drivers/usb/omap3530_usb.h |   49 ++++++++++++++++++++++++++++++++
 3 files changed, 116 insertions(+), 0 deletions(-)
 create mode 100644 drivers/usb/omap3530_usb.c
 create mode 100644 drivers/usb/omap3530_usb.h

diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index d93be2b..d256d07 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -34,6 +34,7 @@ COBJS-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
 COBJS-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o
 COBJS-$(CONFIG_USB_SL811HS) += sl811_usb.o
 COBJS-$(CONFIG_MUSB_HCD) += musb_hcd.o musb_core.o
+COBJS-$(CONFIG_USB_OMAP3530) += omap3530_usb.o
 
 # device
 ifdef CONFIG_USB_DEVICE
diff --git a/drivers/usb/omap3530_usb.c b/drivers/usb/omap3530_usb.c
new file mode 100644
index 0000000..0a1e3bf
--- /dev/null
+++ b/drivers/usb/omap3530_usb.c
@@ -0,0 +1,66 @@
+/*
+ * TI's OMAP3530 platform specific USB functions.
+ *
+ * Copyright (c) 2008 Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Author: Thomas Abraham t-abraham at ti.com, Texas Instruments
+ */
+
+#include <common.h>
+
+#include "omap3530_usb.h"
+#include <asm/arch/cpu.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/io.h>
+
+/* MUSB platform configuration */
+struct musb_config musb_cfg = {
+	(struct	musb_regs *)MENTOR_USB0_BASE,
+	OMAP3530_USB_TIMEOUT,
+	0
+};
+
+/* MUSB module register overlay */
+struct omap3530_usb_regs *regs;
+
+/*
+ * This function performs OMAP3530 platform specific initialization for Mentor
+ * USB OTG controller.
+ */
+int musb_platform_init(void)
+{
+	regs = (struct omap3530_usb_regs *)OMAP3530_USB0_BASE;
+	/* Disable force standby */
+	sr32((void *)&regs->forcestdby, 0 , 1 , 0);
+	/* Set configuration for clock and interface clock to be always on */
+	writel(0x1008, &regs->sysconfig);
+	/* Configure the PHY as PHY interface is 12-pin, 8-bit SDR ULPI */
+	sr32((void *)&regs->interfsel, 0, 1, 1);
+	return 0;
+}
+
+/*
+ * This function performs OMAP3530 platform specific deinitialization for
+ * Mentor USB OTG controller.
+ */
+void musb_platform_deinit(void)
+{
+	/* MUSB soft-reset */
+	writel(2, &regs->sysconfig);
+}
+
diff --git a/drivers/usb/omap3530_usb.h b/drivers/usb/omap3530_usb.h
new file mode 100644
index 0000000..10bc3e3
--- /dev/null
+++ b/drivers/usb/omap3530_usb.h
@@ -0,0 +1,49 @@
+/*
+ * TI's OMAP3530 platform specific USB functions.
+ *
+ * Copyright (c) 2008 Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Author: Thomas Abraham t-abraham at ti.com, Texas Instruments
+ */
+
+#ifndef __OMAP3530_MUSB_H__
+#define __OMAP3530_MUSB_H__
+
+#include "musb_core.h"
+
+/* Base address of OMAP3530 usb0 wrapper */
+#define OMAP3530_USB0_BASE 0x480AB400
+/* Base address of OMAP3530 musb core */
+#define MENTOR_USB0_BASE 0x480AB000
+/* Timeout for OMAP3530 USB module */
+#define OMAP3530_USB_TIMEOUT 0x3FFFFFF
+
+/*
+ * OMAP3530 platform USB register overlay.
+ */
+struct omap3530_usb_regs {
+	u32	revision;
+	u32	sysconfig;
+	u32	sysstatus;
+	u32	interfsel;
+	u32	simenable;
+	u32 forcestdby;
+};
+
+#endif	/* __OMAP3530_MUSB_H__ */
+
-- 
1.5.6