161 lines
3.4 KiB
C
161 lines
3.4 KiB
C
/*
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* host.c - ChipIdea USB host controller driver
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*
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* Copyright (c) 2012 Intel Corporation
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*
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* Author: Alexander Shishkin
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/usb.h>
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#include <linux/usb/hcd.h>
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#include <linux/usb/chipidea.h>
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#define CHIPIDEA_EHCI
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#include "../host/ehci-hcd.c"
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#include "ci.h"
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#include "bits.h"
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#include "host.h"
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static int ci_ehci_setup(struct usb_hcd *hcd)
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{
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struct ehci_hcd *ehci = hcd_to_ehci(hcd);
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int ret;
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hcd->has_tt = 1;
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ret = ehci_setup(hcd);
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if (ret)
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return ret;
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ehci_port_power(ehci, 0);
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return ret;
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}
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static const struct hc_driver ci_ehci_hc_driver = {
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.description = "ehci_hcd",
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.product_desc = "ChipIdea HDRC EHCI",
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.hcd_priv_size = sizeof(struct ehci_hcd),
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/*
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* generic hardware linkage
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*/
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.irq = ehci_irq,
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.flags = HCD_MEMORY | HCD_USB2,
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/*
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* basic lifecycle operations
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*/
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.reset = ci_ehci_setup,
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.start = ehci_run,
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.stop = ehci_stop,
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.shutdown = ehci_shutdown,
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/*
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* managing i/o requests and associated device resources
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*/
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.urb_enqueue = ehci_urb_enqueue,
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.urb_dequeue = ehci_urb_dequeue,
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.endpoint_disable = ehci_endpoint_disable,
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.endpoint_reset = ehci_endpoint_reset,
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/*
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* scheduling support
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*/
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.get_frame_number = ehci_get_frame,
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/*
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* root hub support
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*/
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.hub_status_data = ehci_hub_status_data,
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.hub_control = ehci_hub_control,
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.bus_suspend = ehci_bus_suspend,
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.bus_resume = ehci_bus_resume,
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.relinquish_port = ehci_relinquish_port,
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.port_handed_over = ehci_port_handed_over,
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.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
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};
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static irqreturn_t host_irq(struct ci13xxx *ci)
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{
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return usb_hcd_irq(ci->irq, ci->hcd);
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}
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static int host_start(struct ci13xxx *ci)
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{
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struct usb_hcd *hcd;
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struct ehci_hcd *ehci;
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int ret;
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if (usb_disabled())
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return -ENODEV;
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hcd = usb_create_hcd(&ci_ehci_hc_driver, ci->dev, dev_name(ci->dev));
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if (!hcd)
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return -ENOMEM;
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dev_set_drvdata(ci->dev, ci);
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hcd->rsrc_start = ci->hw_bank.phys;
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hcd->rsrc_len = ci->hw_bank.size;
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hcd->regs = ci->hw_bank.abs;
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hcd->has_tt = 1;
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hcd->power_budget = ci->udc_driver->power_budget;
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ehci = hcd_to_ehci(hcd);
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ehci->caps = ci->hw_bank.cap;
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ehci->has_hostpc = ci->hw_bank.lpm;
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ret = usb_add_hcd(hcd, 0, 0);
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if (ret)
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usb_put_hcd(hcd);
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else
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ci->hcd = hcd;
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return ret;
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}
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static void host_stop(struct ci13xxx *ci)
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{
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struct usb_hcd *hcd = ci->hcd;
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usb_remove_hcd(hcd);
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usb_put_hcd(hcd);
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}
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int ci_hdrc_host_init(struct ci13xxx *ci)
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{
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struct ci_role_driver *rdrv;
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if (!hw_read(ci, CAP_DCCPARAMS, DCCPARAMS_HC))
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return -ENXIO;
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rdrv = devm_kzalloc(ci->dev, sizeof(struct ci_role_driver), GFP_KERNEL);
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if (!rdrv)
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return -ENOMEM;
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rdrv->start = host_start;
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rdrv->stop = host_stop;
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rdrv->irq = host_irq;
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rdrv->name = "host";
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ci->roles[CI_ROLE_HOST] = rdrv;
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return 0;
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}
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