mirror of
https://github.com/torvalds/linux.git
synced 2024-11-06 20:21:57 +00:00
86081d7be3
Without it udev won't be able to load the driver once it notices the device unbound. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
/* 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.
|
|
*
|
|
* 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/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 "ci13xxx_udc.c"
|
|
|
|
#define MSM_USB_BASE (udc->regs)
|
|
|
|
static irqreturn_t msm_udc_irq(int irq, void *data)
|
|
{
|
|
return udc_irq();
|
|
}
|
|
|
|
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 = otg_io_read(udc->transceiver, ULPI_FUNC_CTRL);
|
|
val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
|
|
val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
|
|
otg_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 resource *res;
|
|
void __iomem *regs;
|
|
int irq;
|
|
int ret;
|
|
|
|
dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!res) {
|
|
dev_err(&pdev->dev, "failed to get platform resource mem\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
regs = ioremap(res->start, resource_size(res));
|
|
if (!regs) {
|
|
dev_err(&pdev->dev, "ioremap failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ret = udc_probe(&ci13xxx_msm_udc_driver, &pdev->dev, regs);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "udc_probe failed\n");
|
|
goto iounmap;
|
|
}
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0) {
|
|
dev_err(&pdev->dev, "IRQ not found\n");
|
|
ret = -ENXIO;
|
|
goto udc_remove;
|
|
}
|
|
|
|
ret = request_irq(irq, msm_udc_irq, IRQF_SHARED, pdev->name, pdev);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "request_irq failed\n");
|
|
goto udc_remove;
|
|
}
|
|
|
|
pm_runtime_no_callbacks(&pdev->dev);
|
|
pm_runtime_enable(&pdev->dev);
|
|
|
|
return 0;
|
|
|
|
udc_remove:
|
|
udc_remove();
|
|
iounmap:
|
|
iounmap(regs);
|
|
|
|
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);
|