89 lines
2 KiB
C
89 lines
2 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Wire Adapter Host Controller Driver
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* Common items to HWA and DWA based HCDs
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*
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* Copyright (C) 2005-2006 Intel Corporation
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* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
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*
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* FIXME: docs
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*/
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#include <linux/slab.h>
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#include <linux/module.h>
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#include "wusbhc.h"
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#include "wa-hc.h"
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/**
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* Assumes
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*
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* wa->usb_dev and wa->usb_iface initialized and refcounted,
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* wa->wa_descr initialized.
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*/
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int wa_create(struct wahc *wa, struct usb_interface *iface,
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kernel_ulong_t quirks)
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{
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int result;
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struct device *dev = &iface->dev;
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if (iface->cur_altsetting->desc.bNumEndpoints < 3)
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return -ENODEV;
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result = wa_rpipes_create(wa);
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if (result < 0)
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goto error_rpipes_create;
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wa->quirks = quirks;
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/* Fill up Data Transfer EP pointers */
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wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
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wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
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wa->dti_buf_size = usb_endpoint_maxp(wa->dti_epd);
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wa->dti_buf = kmalloc(wa->dti_buf_size, GFP_KERNEL);
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if (wa->dti_buf == NULL) {
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result = -ENOMEM;
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goto error_dti_buf_alloc;
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}
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result = wa_nep_create(wa, iface);
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if (result < 0) {
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dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
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result);
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goto error_nep_create;
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}
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return 0;
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error_nep_create:
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kfree(wa->dti_buf);
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error_dti_buf_alloc:
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wa_rpipes_destroy(wa);
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error_rpipes_create:
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return result;
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}
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EXPORT_SYMBOL_GPL(wa_create);
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void __wa_destroy(struct wahc *wa)
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{
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if (wa->dti_urb) {
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usb_kill_urb(wa->dti_urb);
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usb_put_urb(wa->dti_urb);
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}
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kfree(wa->dti_buf);
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wa_nep_destroy(wa);
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wa_rpipes_destroy(wa);
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}
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EXPORT_SYMBOL_GPL(__wa_destroy);
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/**
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* wa_reset_all - reset the WA device
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* @wa: the WA to be reset
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*
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* For HWAs the radio controller and all other PALs are also reset.
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*/
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void wa_reset_all(struct wahc *wa)
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{
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/* FIXME: assuming HWA. */
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wusbhc_reset_all(wa->wusb);
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}
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MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
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MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
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MODULE_LICENSE("GPL");
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