1 /* $OpenBSD: icc.c,v 1.1 2022/11/11 15:25:13 matthieu 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 30 struct icc_softc { 31 struct ihidev sc_hdev; 32 struct hidcc *sc_cc; 33 int sc_keydown; 34 }; 35 36 int icc_match(struct device *, void *, void *); 37 void icc_attach(struct device *, struct device *, void *); 38 int icc_detach(struct device *, int); 39 void icc_intr(struct ihidev *, void *, u_int); 40 41 int icc_enable(void *, int); 42 43 struct cfdriver icc_cd = { 44 NULL, "icc", DV_DULL 45 }; 46 47 const struct cfattach icc_ca = { 48 sizeof(struct icc_softc), 49 icc_match, 50 icc_attach, 51 }; 52 53 int 54 icc_match(struct device *parent, void *match, void *aux) 55 { 56 struct ihidev_attach_arg *iha = aux; 57 void *desc; 58 int size; 59 60 if (iha->reportid == IHIDEV_CLAIM_MULTIPLEID) 61 return IMATCH_NONE; 62 63 ihidev_get_report_desc(iha->parent, &desc, &size); 64 if (hid_report_size(desc, size, hid_input, iha->reportid) == 0) 65 return IMATCH_NONE; 66 67 if (!hidcc_match(desc, size, iha->reportid)) 68 return IMATCH_NONE; 69 return IMATCH_IFACECLASS; 70 } 71 72 void 73 icc_attach(struct device *parent, struct device *self, void *aux) 74 { 75 struct icc_softc *sc = (struct icc_softc *)self; 76 struct ihidev_attach_arg *iha = aux; 77 void *desc; 78 int repid, size; 79 80 sc->sc_hdev.sc_intr = icc_intr; 81 sc->sc_hdev.sc_parent = iha->parent; 82 sc->sc_hdev.sc_report_id = iha->reportid; 83 84 ihidev_get_report_desc(iha->parent, &desc, &size); 85 repid = iha->reportid; 86 sc->sc_hdev.sc_isize = hid_report_size(desc, size, hid_input, repid); 87 sc->sc_hdev.sc_osize = hid_report_size(desc, size, hid_output, repid); 88 sc->sc_hdev.sc_fsize = hid_report_size(desc, size, hid_feature, repid); 89 90 struct hidcc_attach_arg hca = { 91 .device = &sc->sc_hdev.sc_idev, 92 .audio_cookie = iha->iaa->ia_cookie, 93 .desc = desc, 94 .descsiz = size, 95 .repid = repid, 96 .isize = sc->sc_hdev.sc_isize, 97 .enable = icc_enable, 98 .arg = self, 99 }; 100 sc->sc_cc = hidcc_attach(&hca); 101 } 102 103 int 104 icc_detach(struct device *self, int flags) 105 { 106 struct icc_softc *sc = (struct icc_softc *)self; 107 int error = 0; 108 109 ihidev_close(&sc->sc_hdev); 110 if (sc->sc_cc != NULL) 111 error = hidcc_detach(sc->sc_cc, flags); 112 return error; 113 } 114 115 void 116 icc_intr(struct ihidev *addr, void *data, u_int len) 117 { 118 struct icc_softc *sc = (struct icc_softc *)addr; 119 120 if (sc->sc_cc != NULL) 121 hidcc_intr(sc->sc_cc, data, len); 122 } 123 124 int 125 icc_enable(void *v, int on) 126 { 127 struct icc_softc *sc = v; 128 int error = 0; 129 130 if (on) 131 error = ihidev_open(&sc->sc_hdev); 132 else 133 ihidev_close(&sc->sc_hdev); 134 return error; 135 } 136