2 * host.c - ChipIdea USB host controller driver
4 * Copyright (c) 2012 Intel Corporation
6 * Author: Alexander Shishkin
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <linux/kernel.h>
23 #include <linux/usb.h>
24 #include <linux/usb/hcd.h>
25 #include <linux/usb/chipidea.h>
28 #include "../host/ehci-hcd.c"
34 static int ci_ehci_setup(struct usb_hcd *hcd)
36 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
41 ret = ehci_setup(hcd);
45 ehci_port_power(ehci, 0);
50 static const struct hc_driver ci_ehci_hc_driver = {
51 .description = "ehci_hcd",
52 .product_desc = "ChipIdea HDRC EHCI",
53 .hcd_priv_size = sizeof(struct ehci_hcd),
56 * generic hardware linkage
59 .flags = HCD_MEMORY | HCD_USB2,
62 * basic lifecycle operations
64 .reset = ci_ehci_setup,
67 .shutdown = ehci_shutdown,
70 * managing i/o requests and associated device resources
72 .urb_enqueue = ehci_urb_enqueue,
73 .urb_dequeue = ehci_urb_dequeue,
74 .endpoint_disable = ehci_endpoint_disable,
75 .endpoint_reset = ehci_endpoint_reset,
80 .get_frame_number = ehci_get_frame,
85 .hub_status_data = ehci_hub_status_data,
86 .hub_control = ehci_hub_control,
87 .bus_suspend = ehci_bus_suspend,
88 .bus_resume = ehci_bus_resume,
89 .relinquish_port = ehci_relinquish_port,
90 .port_handed_over = ehci_port_handed_over,
92 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
95 static irqreturn_t host_irq(struct ci13xxx *ci)
97 return usb_hcd_irq(ci->irq, ci->hcd);
100 static int host_start(struct ci13xxx *ci)
103 struct ehci_hcd *ehci;
109 hcd = usb_create_hcd(&ci_ehci_hc_driver, ci->dev, dev_name(ci->dev));
113 dev_set_drvdata(ci->dev, ci);
114 hcd->rsrc_start = ci->hw_bank.phys;
115 hcd->rsrc_len = ci->hw_bank.size;
116 hcd->regs = ci->hw_bank.abs;
119 hcd->power_budget = ci->udc_driver->power_budget;
121 ehci = hcd_to_ehci(hcd);
122 ehci->caps = ci->hw_bank.cap;
123 ehci->has_hostpc = ci->hw_bank.lpm;
125 ret = usb_add_hcd(hcd, 0, 0);
134 static void host_stop(struct ci13xxx *ci)
136 struct usb_hcd *hcd = ci->hcd;
142 int ci_hdrc_host_init(struct ci13xxx *ci)
144 struct ci_role_driver *rdrv;
146 if (!hw_read(ci, CAP_DCCPARAMS, DCCPARAMS_HC))
149 rdrv = devm_kzalloc(ci->dev, sizeof(struct ci_role_driver), GFP_KERNEL);
153 rdrv->start = host_start;
154 rdrv->stop = host_stop;
155 rdrv->irq = host_irq;
157 ci->roles[CI_ROLE_HOST] = rdrv;