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/*
* Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
*
* 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/types.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
#include <mach/irqs.h>
#include <mach/mx23.h>
#include "usb.h"
#include "mx23_pins.h"
#define USB_POWER_ENABLE MXS_PIN_TO_GPIO(PINID_GPMI_CE2N)
#define USB_ID_PIN MXS_PIN_TO_GPIO(PINID_ROTARYA)
static void usb_host_phy_resume(struct fsl_usb2_platform_data *plat)
{
fsl_platform_set_usb_phy_dis(plat, 0);
}
static int usbotg_init_ext(struct platform_device *pdev)
{
struct clk *usb_clk;
usb_clk = clk_get(NULL, "usb_clk0");
clk_enable(usb_clk);
clk_put(usb_clk);
return usbotg_init(pdev);
}
/*
* 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 __maybe_unused dr_utmi_config = {
.name = "DR",
.platform_init = usbotg_init_ext,
.platform_uninit = usbotg_uninit,
.phy_mode = FSL_USB2_PHY_UTMI_WIDE,
.power_budget = 500, /* 500 mA max power */
.platform_resume = usb_host_phy_resume,
.transceiver = "utmi",
.phy_regs = USBPHY_PHYS_ADDR,
.id_gpio = USB_ID_PIN,
};
/*
* OTG resources
*/
static struct resource otg_resources[] = {
[0] = {
.start = (u32)USBCTRL_PHYS_ADDR,
.end = (u32)(USBCTRL_PHYS_ADDR + 0x1ff),
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_USB_CTRL,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = IRQ_USB_WAKEUP,
.flags = IORESOURCE_IRQ,
},
};
/*
* UDC resources (same as OTG resource)
*/
static struct resource udc_resources[] = {
[0] = {
.start = (u32)USBCTRL_PHYS_ADDR,
.end = (u32)(USBCTRL_PHYS_ADDR + 0x1ff),
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_USB_CTRL,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = IRQ_USB_WAKEUP,
.flags = IORESOURCE_IRQ,
},
};
static u64 dr_udc_dmamask = ~(u32) 0;
static void dr_udc_release(struct device *dev)
{
}
/*
* platform device structs
* dev.platform_data field plugged at run time
*/
static struct platform_device dr_udc_device = {
.name = "fsl-usb2-udc",
.id = -1,
.dev = {
.release = dr_udc_release,
.dma_mask = &dr_udc_dmamask,
.coherent_dma_mask = 0xffffffff,
},
.resource = udc_resources,
.num_resources = ARRAY_SIZE(udc_resources),
};
static u64 dr_otg_dmamask = ~(u32) 0;
static void dr_otg_release(struct device *dev)
{}
static struct platform_device __maybe_unused dr_otg_device = {
.name = "fsl-usb2-otg",
.id = -1,
.dev = {
.release = dr_otg_release,
.dma_mask = &dr_otg_dmamask,
.coherent_dma_mask = 0xffffffff,
},
.resource = otg_resources,
.num_resources = ARRAY_SIZE(otg_resources),
};
static int __init usb_dr_init(void)
{
pr_debug("%s: \n", __func__);
dr_register_otg();
dr_register_host(otg_resources, ARRAY_SIZE(otg_resources));
dr_register_udc();
PDATA->change_ahb_burst = 1;
PDATA->ahb_burst_mode = 0;
return 0;
}
/* utmi_init will be call by otg, host and perperial tree time*/
void fsl_phy_usb_utmi_init(struct fsl_xcvr_ops *this)
{
}
void fsl_phy_usb_utmi_uninit(struct fsl_xcvr_ops *this)
{
}
/*!
* set vbus power
*
* @param view viewport register
* @param on power on or off
*/
void fsl_phy_set_power(struct fsl_xcvr_ops *this,
struct fsl_usb2_platform_data *pdata, int on)
{
int ret;
ret = gpio_request(USB_POWER_ENABLE, "usb_power");
if (ret) {
pr_err("fail request usb power control pin\n");
return;
}
gpio_direction_output(USB_POWER_ENABLE, on);
gpio_set_value(USB_POWER_ENABLE, on);
gpio_free(USB_POWER_ENABLE);
}
#ifdef CONFIG_MXS_VBUS_CURRENT_DRAW
fs_initcall(usb_dr_init);
#else
subsys_initcall(usb_dr_init);
#endif
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