tegra: add USB clock and PHY programming interface for USB device

Change-Id: I37fea0ee06525d9894020d6a161a615c07c4e8e8

3 files changed, 81 insertions, 1 deletions

diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 878fee0da68e..469c2126249d 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -18,7 +18,8 @@ obj-$(CONFIG_USB_S3C2410)	+= s3c2410_udc.o
 obj-$(CONFIG_USB_AT91)		+= at91_udc.o
 obj-$(CONFIG_USB_ATMEL_USBA)	+= atmel_usba_udc.o
 obj-$(CONFIG_USB_FSL_USB2)	+= fsl_usb2_udc.o
-obj-$(CONFIG_USB_TEGRA)		:= fsl_udc_core.o
+obj-$(CONFIG_USB_TEGRA)		+= fsl_udc_core.o
+obj-$(CONFIG_USB_TEGRA)		+= tegra_udc.o
 fsl_usb2_udc-objs		:= fsl_udc_core.o
 ifeq ($(CONFIG_ARCH_MXC),y)
 fsl_usb2_udc-objs		+= fsl_mx3_udc.o
diff --git a/drivers/usb/gadget/fsl_usb2_udc.h b/drivers/usb/gadget/fsl_usb2_udc.h
index 038e448dde01..ab31468749bd 100644
--- a/drivers/usb/gadget/fsl_usb2_udc.h
+++ b/drivers/usb/gadget/fsl_usb2_udc.h
@@ -597,10 +597,15 @@ struct platform_device;
 #define platform_udc_clk_init		_UDC_NAME##_udc_clk_init
 #define platform_udc_clk_finalize	_UDC_NAME##_udc_clk_finalize
 #define platform_udc_clk_release	_UDC_NAME##_udc_clk_release
+#define platform_udc_clk_suspend	_UDC_NAME##_udc_clk_suspend
+#define platform_udc_clk_resume		_UDC_NAME##_udc_clk_resume
+
 
 extern int platform_udc_clk_init(struct platform_device *pdev);
 extern void platform_udc_clk_finalize(struct platform_device *pdev);
 extern void platform_udc_clk_release(void);
+extern void platform_udc_clk_suspend(void);
+extern void platform_udc_clk_resume(void);
 #else
 static inline int platform_udc_clk_init(struct platform_device *pdev)
 {
diff --git a/drivers/usb/gadget/tegra_udc.c b/drivers/usb/gadget/tegra_udc.c
new file mode 100644
index 000000000000..7e6c890fb020
--- /dev/null
+++ b/drivers/usb/gadget/tegra_udc.c
@@ -0,0 +1,74 @@
+/*
+ * drivers/usb/gadget/tegra_udc.c
+ *
+ * USB device controller clock and PHY programming for Tegra SoCs
+ *
+ * Copyright (c) 2009, NVIDIA Corporation.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#include "nvddk_usbphy.h"
+#include "mach/nvrm_linux.h"
+#include "nvassert.h"
+
+NvDdkUsbPhyHandle s_hUsbPhy;
+
+int tegra_udc_clk_init(struct platform_device *pdev)
+{
+	NvError nverr;
+	NvDdkUsbPhyIoctl_VBusStatusOutputArgs Status;
+
+	nverr = NvDdkUsbPhyOpen(s_hRmGlobal, pdev->id, &s_hUsbPhy);
+	if (nverr != NvSuccess)
+		return -ENODEV;
+
+	NV_ASSERT_SUCCESS(
+		NvDdkUsbPhyIoctl(s_hUsbPhy,
+			NvDdkUsbPhyIoctlType_VBusStatus,
+			NULL, &Status));
+
+	if (Status.VBusDetected) {
+		NV_ASSERT_SUCCESS(NvDdkUsbPhyPowerUp(s_hUsbPhy, 0));
+	} else {
+		NV_ASSERT_SUCCESS(NvDdkUsbPhyPowerDown(s_hUsbPhy, 0));
+	}
+	printk("tegra_udc_clk_init called\n");
+
+	return 0;
+}
+
+void tegra_udc_clk_finalize(struct platform_device *pdev)
+{
+	printk("tegra_udc_clk_finalize called\n");
+}
+
+void tegra_udc_clk_release(void)
+{
+	printk("tegra_udc_clk_release called\n");
+}
+
+void tegra_udc_clk_suspend(void)
+{
+	NV_ASSERT_SUCCESS(NvDdkUsbPhyPowerDown(s_hUsbPhy, 0));
+}
+
+void tegra_udc_clk_resume(void)
+{
+	NV_ASSERT_SUCCESS(NvDdkUsbPhyPowerUp(s_hUsbPhy, 0));
+}