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/* $OpenBSD: ucc.c,v 1.37 2022/11/14 00:16:46 deraadt Exp $ */
/*
* Copyright (c) 2021 Anton Lindqvist <anton@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/uhidev.h>
#include <dev/hid/hidccvar.h>
struct ucc_softc {
struct uhidev sc_hdev;
struct hidcc *sc_cc;
};
int ucc_match(struct device *, void *, void *);
void ucc_attach(struct device *, struct device *, void *);
int ucc_detach(struct device *, int);
void ucc_intr(struct uhidev *, void *, u_int);
int ucc_enable(void *, int);
struct cfdriver ucc_cd = {
NULL, "ucc", DV_DULL
};
const struct cfattach ucc_ca = {
sizeof(struct ucc_softc),
ucc_match,
ucc_attach,
ucc_detach,
};
int
ucc_match(struct device *parent, void *match, void *aux)
{
struct uhidev_attach_arg *uha = (struct uhidev_attach_arg *)aux;
void *desc;
int size;
if (UHIDEV_CLAIM_MULTIPLE_REPORTID(uha))
return UMATCH_NONE;
uhidev_get_report_desc(uha->parent, &desc, &size);
if (hid_report_size(desc, size, hid_input, uha->reportid) == 0)
return UMATCH_NONE;
if (!hidcc_match(desc, size, uha->reportid))
return UMATCH_NONE;
return UMATCH_IFACECLASS;
}
void
ucc_attach(struct device *parent, struct device *self, void *aux)
{
struct ucc_softc *sc = (struct ucc_softc *)self;
struct uhidev_attach_arg *uha = (struct uhidev_attach_arg *)aux;
void *desc;
int repid, size;
sc->sc_hdev.sc_intr = ucc_intr;
sc->sc_hdev.sc_parent = uha->parent;
sc->sc_hdev.sc_udev = uha->uaa->device;
sc->sc_hdev.sc_report_id = uha->reportid;
uhidev_get_report_desc(uha->parent, &desc, &size);
repid = uha->reportid;
sc->sc_hdev.sc_isize = hid_report_size(desc, size, hid_input, repid);
sc->sc_hdev.sc_osize = hid_report_size(desc, size, hid_output, repid);
sc->sc_hdev.sc_fsize = hid_report_size(desc, size, hid_feature, repid);
struct hidcc_attach_arg hca = {
.device = &sc->sc_hdev.sc_dev,
.audio_cookie = uha->uaa->cookie,
.desc = desc,
.descsiz = size,
.repid = repid,
.isize = sc->sc_hdev.sc_isize,
.enable = ucc_enable,
.arg = self,
};
sc->sc_cc = hidcc_attach(&hca);
}
int
ucc_detach(struct device *self, int flags)
{
struct ucc_softc *sc = (struct ucc_softc *)self;
int error = 0;
uhidev_close(&sc->sc_hdev);
if (sc->sc_cc != NULL)
error = hidcc_detach(sc->sc_cc, flags);
return error;
}
void
ucc_intr(struct uhidev *addr, void *data, u_int len)
{
struct ucc_softc *sc = (struct ucc_softc *)addr;
if (sc->sc_cc != NULL)
hidcc_intr(sc->sc_cc, data, len);
}
int
ucc_enable(void *v, int on)
{
struct ucc_softc *sc = (struct ucc_softc *)v;
int error = 0;
if (on)
error = uhidev_open(&sc->sc_hdev);
else
uhidev_close(&sc->sc_hdev);
return error;
}
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