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/*
* Copyright (C) 2005-2010 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
#include <mach/arc_otg.h>
#include <mach/hardware.h>
#include "usb.h"
#if defined(CONFIG_USB_OTG) || defined(CONFIG_USB_EHCI_ARC_OTG) || defined(CONFIG_USB_GADGET_ARC)
static int usbotg_init_ext(struct platform_device *pdev);
static void usbotg_uninit_ext(struct fsl_usb2_platform_data *pdata);
static void _wake_up_enable(struct fsl_usb2_platform_data *pdata, bool enable);
static void usbotg_clock_gate(bool on);
/*
* platform data structs
* - Which one to use is determined by CONFIG options in usb.h
* - operating_mode plugged at run time
*/
static struct fsl_usb2_platform_data dr_utmi_config = {
.name = "DR",
.platform_init = usbotg_init_ext,
.platform_uninit = usbotg_uninit_ext,
.phy_mode = FSL_USB2_PHY_UTMI_WIDE,
.power_budget = 500, /* 500 mA max power */
.gpio_usb_active = gpio_usbotg_hs_active,
.gpio_usb_inactive = gpio_usbotg_hs_inactive,
.usb_clock_for_pm = usbotg_clock_gate,
.wake_up_enable = _wake_up_enable,
.transceiver = "utmi",
};
/* Notes: configure USB clock*/
static int usbotg_init_ext(struct platform_device *pdev)
{
struct clk *usb_clk;
usb_clk = clk_get(NULL, "usboh3_clk");
clk_enable(usb_clk);
clk_put(usb_clk);
usb_clk = clk_get(&pdev->dev, "usb_phy1_clk");
clk_enable(usb_clk);
clk_put(usb_clk);
/*derive clock from oscillator */
usb_clk = clk_get(NULL, "usb_utmi_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
return usbotg_init(pdev);
}
static void usbotg_uninit_ext(struct fsl_usb2_platform_data *pdata)
{
struct clk *usb_clk;
usb_clk = clk_get(NULL, "usboh3_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
usb_clk = clk_get(&pdata->pdev->dev, "usb_phy1_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
usbotg_uninit(pdata);
}
static void _wake_up_enable(struct fsl_usb2_platform_data *pdata, bool enable)
{
if (get_usb_mode(pdata) == FSL_USB_DR_DEVICE) {
if (enable) {
USBCTRL |= UCTRL_OWIE;
USBCTRL_HOST2 |= UCTRL_H2OVBWK_EN;
USB_PHY_CTR_FUNC |= USB_UTMI_PHYCTRL_CONF2;
} else {
USBCTRL &= ~UCTRL_OWIE;
USBCTRL_HOST2 &= ~UCTRL_H2OVBWK_EN;
USB_PHY_CTR_FUNC &= ~USB_UTMI_PHYCTRL_CONF2;
}
} else {
if (enable) {
USBCTRL |= UCTRL_OWIE;
USBCTRL_HOST2 |= (1 << 5);
} else {
USBCTRL &= ~UCTRL_OWIE;
USBCTRL_HOST2 &= ~(1 << 5);
}
}
}
static void usbotg_clock_gate(bool on)
{
struct clk *usb_clk;
if (on) {
usb_clk = clk_get(NULL, "usb_ahb_clk");
clk_enable(usb_clk);
clk_put(usb_clk);
usb_clk = clk_get(NULL, "usboh3_clk");
clk_enable(usb_clk);
clk_put(usb_clk);
usb_clk = clk_get(NULL, "usb_phy1_clk");
clk_enable(usb_clk);
clk_put(usb_clk);
/*derive clock from oscillator */
usb_clk = clk_get(NULL, "usb_utmi_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
} else {
usb_clk = clk_get(NULL, "usboh3_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
usb_clk = clk_get(NULL, "usb_phy1_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
usb_clk = clk_get(NULL, "usb_ahb_clk");
clk_disable(usb_clk);
clk_put(usb_clk);
}
}
#endif
void mx5_set_otghost_vbus_func(driver_vbus_func driver_vbus)
{
#if defined(CONFIG_USB_OTG) || defined(CONFIG_USB_EHCI_ARC_OTG) || defined(CONFIG_USB_GADGET_ARC)
dr_utmi_config.platform_driver_vbus = driver_vbus;
#endif
}
void __init mx5_usb_dr_init(void)
{
#ifdef CONFIG_USB_OTG
dr_utmi_config.operating_mode = FSL_USB2_DR_OTG;
platform_device_add_data(&mxc_usbdr_otg_device, &dr_utmi_config, sizeof(dr_utmi_config));
platform_device_register(&mxc_usbdr_otg_device);
#endif
#ifdef CONFIG_USB_EHCI_ARC_OTG
dr_utmi_config.operating_mode = DR_HOST_MODE;
platform_device_add_data(&mxc_usbdr_host_device, &dr_utmi_config, sizeof(dr_utmi_config));
platform_device_register(&mxc_usbdr_host_device);
#endif
#ifdef CONFIG_USB_GADGET_ARC
dr_utmi_config.operating_mode = DR_UDC_MODE;
platform_device_add_data(&mxc_usbdr_udc_device, &dr_utmi_config, sizeof(dr_utmi_config));
platform_device_register(&mxc_usbdr_udc_device);
#endif
}
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