icc.c revision 1.2
1/* $OpenBSD: icc.c,v 1.2 2024/08/17 15:10:00 deraadt Exp $ */ 2 3/* 4 * Copyright (c) 2021 Anton Lindqvist <anton@openbsd.org> 5 * Copyright (c) 2022 Matthieu Herrb <matthieu@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20#include <sys/param.h> 21#include <sys/systm.h> 22#include <sys/device.h> 23 24#include <dev/i2c/i2cvar.h> 25#include <dev/i2c/ihidev.h> 26 27#include <dev/hid/hid.h> 28#include <dev/hid/hidccvar.h> 29 30struct icc_softc { 31 struct ihidev sc_hdev; 32 struct hidcc *sc_cc; 33 int sc_keydown; 34}; 35 36int icc_match(struct device *, void *, void *); 37void icc_attach(struct device *, struct device *, void *); 38int icc_detach(struct device *, int); 39void icc_intr(struct ihidev *, void *, u_int); 40 41int icc_enable(void *, int); 42 43struct cfdriver icc_cd = { 44 NULL, "icc", DV_DULL 45}; 46 47const struct cfattach icc_ca = { 48 sizeof(struct icc_softc), 49 icc_match, 50 icc_attach, 51 icc_detach 52}; 53 54int 55icc_match(struct device *parent, void *match, void *aux) 56{ 57 struct ihidev_attach_arg *iha = aux; 58 void *desc; 59 int size; 60 61 if (iha->reportid == IHIDEV_CLAIM_MULTIPLEID) 62 return IMATCH_NONE; 63 64 ihidev_get_report_desc(iha->parent, &desc, &size); 65 if (hid_report_size(desc, size, hid_input, iha->reportid) == 0) 66 return IMATCH_NONE; 67 68 if (!hidcc_match(desc, size, iha->reportid)) 69 return IMATCH_NONE; 70 return IMATCH_IFACECLASS; 71} 72 73void 74icc_attach(struct device *parent, struct device *self, void *aux) 75{ 76 struct icc_softc *sc = (struct icc_softc *)self; 77 struct ihidev_attach_arg *iha = aux; 78 void *desc; 79 int repid, size; 80 81 sc->sc_hdev.sc_intr = icc_intr; 82 sc->sc_hdev.sc_parent = iha->parent; 83 sc->sc_hdev.sc_report_id = iha->reportid; 84 85 ihidev_get_report_desc(iha->parent, &desc, &size); 86 repid = iha->reportid; 87 sc->sc_hdev.sc_isize = hid_report_size(desc, size, hid_input, repid); 88 sc->sc_hdev.sc_osize = hid_report_size(desc, size, hid_output, repid); 89 sc->sc_hdev.sc_fsize = hid_report_size(desc, size, hid_feature, repid); 90 91 struct hidcc_attach_arg hca = { 92 .device = &sc->sc_hdev.sc_idev, 93 .audio_cookie = iha->iaa->ia_cookie, 94 .desc = desc, 95 .descsiz = size, 96 .repid = repid, 97 .isize = sc->sc_hdev.sc_isize, 98 .enable = icc_enable, 99 .arg = self, 100 }; 101 sc->sc_cc = hidcc_attach(&hca); 102} 103 104int 105icc_detach(struct device *self, int flags) 106{ 107 struct icc_softc *sc = (struct icc_softc *)self; 108 int error = 0; 109 110 ihidev_close(&sc->sc_hdev); 111 if (sc->sc_cc != NULL) 112 error = hidcc_detach(sc->sc_cc, flags); 113 return error; 114} 115 116void 117icc_intr(struct ihidev *addr, void *data, u_int len) 118{ 119 struct icc_softc *sc = (struct icc_softc *)addr; 120 121 if (sc->sc_cc != NULL) 122 hidcc_intr(sc->sc_cc, data, len); 123} 124 125int 126icc_enable(void *v, int on) 127{ 128 struct icc_softc *sc = v; 129 int error = 0; 130 131 if (on) 132 error = ihidev_open(&sc->sc_hdev); 133 else 134 ihidev_close(&sc->sc_hdev); 135 return error; 136} 137