a756186b61
Use usb_put_hcd() call instead of usb_remove_hcd() as that's the appropriate call to drop hcd which failed registration. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
161 lines
3.4 KiB
C
161 lines
3.4 KiB
C
/*
|
|
* host.c - ChipIdea USB host controller driver
|
|
*
|
|
* Copyright (c) 2012 Intel Corporation
|
|
*
|
|
* Author: Alexander Shishkin
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/hcd.h>
|
|
#include <linux/usb/chipidea.h>
|
|
|
|
#define CHIPIDEA_EHCI
|
|
#include "../host/ehci-hcd.c"
|
|
|
|
#include "ci.h"
|
|
#include "bits.h"
|
|
#include "host.h"
|
|
|
|
static int ci_ehci_setup(struct usb_hcd *hcd)
|
|
{
|
|
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
|
|
int ret;
|
|
|
|
hcd->has_tt = 1;
|
|
|
|
ret = ehci_setup(hcd);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ehci_port_power(ehci, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct hc_driver ci_ehci_hc_driver = {
|
|
.description = "ehci_hcd",
|
|
.product_desc = "ChipIdea HDRC EHCI",
|
|
.hcd_priv_size = sizeof(struct ehci_hcd),
|
|
|
|
/*
|
|
* generic hardware linkage
|
|
*/
|
|
.irq = ehci_irq,
|
|
.flags = HCD_MEMORY | HCD_USB2,
|
|
|
|
/*
|
|
* basic lifecycle operations
|
|
*/
|
|
.reset = ci_ehci_setup,
|
|
.start = ehci_run,
|
|
.stop = ehci_stop,
|
|
.shutdown = ehci_shutdown,
|
|
|
|
/*
|
|
* managing i/o requests and associated device resources
|
|
*/
|
|
.urb_enqueue = ehci_urb_enqueue,
|
|
.urb_dequeue = ehci_urb_dequeue,
|
|
.endpoint_disable = ehci_endpoint_disable,
|
|
.endpoint_reset = ehci_endpoint_reset,
|
|
|
|
/*
|
|
* scheduling support
|
|
*/
|
|
.get_frame_number = ehci_get_frame,
|
|
|
|
/*
|
|
* root hub support
|
|
*/
|
|
.hub_status_data = ehci_hub_status_data,
|
|
.hub_control = ehci_hub_control,
|
|
.bus_suspend = ehci_bus_suspend,
|
|
.bus_resume = ehci_bus_resume,
|
|
.relinquish_port = ehci_relinquish_port,
|
|
.port_handed_over = ehci_port_handed_over,
|
|
|
|
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
|
|
};
|
|
|
|
static irqreturn_t host_irq(struct ci13xxx *ci)
|
|
{
|
|
return usb_hcd_irq(ci->irq, ci->hcd);
|
|
}
|
|
|
|
static int host_start(struct ci13xxx *ci)
|
|
{
|
|
struct usb_hcd *hcd;
|
|
struct ehci_hcd *ehci;
|
|
int ret;
|
|
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
hcd = usb_create_hcd(&ci_ehci_hc_driver, ci->dev, dev_name(ci->dev));
|
|
if (!hcd)
|
|
return -ENOMEM;
|
|
|
|
dev_set_drvdata(ci->dev, ci);
|
|
hcd->rsrc_start = ci->hw_bank.phys;
|
|
hcd->rsrc_len = ci->hw_bank.size;
|
|
hcd->regs = ci->hw_bank.abs;
|
|
hcd->has_tt = 1;
|
|
|
|
hcd->power_budget = ci->udc_driver->power_budget;
|
|
|
|
ehci = hcd_to_ehci(hcd);
|
|
ehci->caps = ci->hw_bank.cap;
|
|
ehci->has_hostpc = ci->hw_bank.lpm;
|
|
|
|
ret = usb_add_hcd(hcd, 0, 0);
|
|
if (ret)
|
|
usb_put_hcd(hcd);
|
|
else
|
|
ci->hcd = hcd;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void host_stop(struct ci13xxx *ci)
|
|
{
|
|
struct usb_hcd *hcd = ci->hcd;
|
|
|
|
usb_remove_hcd(hcd);
|
|
usb_put_hcd(hcd);
|
|
}
|
|
|
|
int ci_hdrc_host_init(struct ci13xxx *ci)
|
|
{
|
|
struct ci_role_driver *rdrv;
|
|
|
|
if (!hw_read(ci, CAP_DCCPARAMS, DCCPARAMS_HC))
|
|
return -ENXIO;
|
|
|
|
rdrv = devm_kzalloc(ci->dev, sizeof(struct ci_role_driver), GFP_KERNEL);
|
|
if (!rdrv)
|
|
return -ENOMEM;
|
|
|
|
rdrv->start = host_start;
|
|
rdrv->stop = host_stop;
|
|
rdrv->irq = host_irq;
|
|
rdrv->name = "host";
|
|
ci->roles[CI_ROLE_HOST] = rdrv;
|
|
|
|
return 0;
|
|
}
|