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/* Copyright (c) 2010, Code Aurora Forum. 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 version 2 and
* only version 2 as published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/usb/msm_hsusb_hw.h>
#include <linux/usb/ulpi.h>
#include <linux/usb/gadget.h>
#include "ci13xxx_udc.h"
#define MSM_USB_BASE (udc->regs)
static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
{
struct device *dev = udc->gadget.dev.parent;
int val;
switch (event) {
case CI13XXX_CONTROLLER_RESET_EVENT:
dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n");
writel(0, USB_AHBBURST);
writel(0, USB_AHBMODE);
break;
case CI13XXX_CONTROLLER_STOPPED_EVENT:
dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n");
/*
* Put the transceiver in non-driving mode. Otherwise host
* may not detect soft-disconnection.
*/
val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL);
val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
break;
default:
dev_dbg(dev, "unknown ci13xxx_udc event\n");
break;
}
}
static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
.name = "ci13xxx_msm",
.flags = CI13XXX_REGS_SHARED |
CI13XXX_REQUIRE_TRANSCEIVER |
CI13XXX_PULLUP_ON_VBUS |
CI13XXX_DISABLE_STREAMING,
.notify_event = ci13xxx_msm_notify_event,
};
static int ci13xxx_msm_probe(struct platform_device *pdev)
{
struct platform_device *plat_ci;
int ret;
dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
plat_ci = platform_device_alloc("ci_udc", -1);
if (!plat_ci) {
dev_err(&pdev->dev, "can't allocate ci_udc platform device\n");
return -ENOMEM;
}
ret = platform_device_add_resources(plat_ci, pdev->resource,
pdev->num_resources);
if (ret) {
dev_err(&pdev->dev, "can't add resources to platform device\n");
goto put_platform;
}
ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
sizeof(ci13xxx_msm_udc_driver));
if (ret)
goto put_platform;
ret = platform_device_add(plat_ci);
if (ret)
goto put_platform;
pm_runtime_no_callbacks(&pdev->dev);
pm_runtime_enable(&pdev->dev);
return 0;
put_platform:
platform_device_put(plat_ci);
return ret;
}
static struct platform_driver ci13xxx_msm_driver = {
.probe = ci13xxx_msm_probe,
.driver = { .name = "msm_hsusb", },
};
MODULE_ALIAS("platform:msm_hsusb");
static int __init ci13xxx_msm_init(void)
{
return platform_driver_register(&ci13xxx_msm_driver);
}
module_init(ci13xxx_msm_init);
MODULE_LICENSE("GPL v2");
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