1 /* $OpenBSD: ikbd.c,v 1.1 2016/01/14 21:01:49 kettenis Exp $ */ 2 /* 3 * HID-over-i2c keyboard driver 4 * 5 * Copyright (c) 2016 Mark Kettenis <kettenis@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/kernel.h> 23 #include <sys/device.h> 24 #include <sys/ioctl.h> 25 #include <sys/timeout.h> 26 27 #include <dev/i2c/i2cvar.h> 28 #include <dev/i2c/ihidev.h> 29 30 #include <dev/wscons/wsconsio.h> 31 #include <dev/wscons/wskbdvar.h> 32 #include <dev/wscons/wsksymdef.h> 33 34 #include <dev/hid/hid.h> 35 #include <dev/hid/hidkbdsc.h> 36 37 struct ikbd_softc { 38 struct ihidev sc_hdev; 39 struct hidkbd sc_kbd; 40 }; 41 42 void ikbd_intr(struct ihidev *addr, void *ibuf, u_int len); 43 44 int ikbd_enable(void *, int); 45 void ikbd_set_leds(void *, int); 46 int ikbd_ioctl(void *, u_long, caddr_t, int, struct proc *); 47 48 const struct wskbd_accessops ikbd_accessops = { 49 ikbd_enable, 50 ikbd_set_leds, 51 ikbd_ioctl, 52 }; 53 54 int ikbd_match(struct device *, void *, void *); 55 void ikbd_attach(struct device *, struct device *, void *); 56 int ikbd_detach(struct device *, int); 57 58 struct cfdriver ikbd_cd = { 59 NULL, "ikbd", DV_DULL 60 }; 61 62 const struct cfattach ikbd_ca = { 63 sizeof(struct ikbd_softc), 64 ikbd_match, 65 ikbd_attach, 66 ikbd_detach 67 }; 68 69 int 70 ikbd_match(struct device *parent, void *match, void *aux) 71 { 72 struct ihidev_attach_arg *iha = (struct ihidev_attach_arg *)aux; 73 int size; 74 void *desc; 75 76 ihidev_get_report_desc(iha->parent, &desc, &size); 77 if (!hid_is_collection(desc, size, iha->reportid, 78 HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_KEYBOARD))) 79 return (IMATCH_NONE); 80 81 return (IMATCH_IFACECLASS); 82 } 83 84 void 85 ikbd_attach(struct device *parent, struct device *self, void *aux) 86 { 87 struct ikbd_softc *sc = (struct ikbd_softc *)self; 88 struct hidkbd *kbd = &sc->sc_kbd; 89 struct ihidev_attach_arg *iha = (struct ihidev_attach_arg *)aux; 90 int dlen, repid; 91 void *desc; 92 93 sc->sc_hdev.sc_intr = ikbd_intr; 94 sc->sc_hdev.sc_parent = iha->parent; 95 sc->sc_hdev.sc_report_id = iha->reportid; 96 97 ihidev_get_report_desc(iha->parent, &desc, &dlen); 98 repid = iha->reportid; 99 sc->sc_hdev.sc_isize = hid_report_size(desc, dlen, hid_input, repid); 100 sc->sc_hdev.sc_osize = hid_report_size(desc, dlen, hid_output, repid); 101 sc->sc_hdev.sc_fsize = hid_report_size(desc, dlen, hid_feature, repid); 102 103 if (hidkbd_attach(self, kbd, 0, 0, repid, desc, dlen) != 0) 104 return; 105 106 printf("\n"); 107 108 hidkbd_attach_wskbd(kbd, KB_US | KB_DEFAULT, &ikbd_accessops); 109 } 110 111 int 112 ikbd_detach(struct device *self, int flags) 113 { 114 struct ikbd_softc *sc = (struct ikbd_softc *)self; 115 struct hidkbd *kbd = &sc->sc_kbd; 116 117 return hidkbd_detach(kbd, flags); 118 } 119 120 void 121 ikbd_intr(struct ihidev *addr, void *ibuf, u_int len) 122 { 123 struct ikbd_softc *sc = (struct ikbd_softc *)addr; 124 struct hidkbd *kbd = &sc->sc_kbd; 125 126 if (kbd->sc_enabled != 0) 127 hidkbd_input(kbd, (uint8_t *)ibuf, len); 128 } 129 130 int 131 ikbd_enable(void *v, int on) 132 { 133 struct ikbd_softc *sc = v; 134 struct hidkbd *kbd = &sc->sc_kbd; 135 int rv; 136 137 if ((rv = hidkbd_enable(kbd, on)) != 0) 138 return rv; 139 140 if (on) { 141 return ihidev_open(&sc->sc_hdev); 142 } else { 143 ihidev_close(&sc->sc_hdev); 144 return 0; 145 } 146 } 147 148 void 149 ikbd_set_leds(void *v, int leds) 150 { 151 } 152 153 int 154 ikbd_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p) 155 { 156 struct ikbd_softc *sc = v; 157 struct hidkbd *kbd = &sc->sc_kbd; 158 int rc; 159 160 switch (cmd) { 161 case WSKBDIO_GTYPE: 162 /* XXX: should we set something else? */ 163 *(u_int *)data = WSKBD_TYPE_USB; 164 return 0; 165 default: 166 rc = ihidev_ioctl(&sc->sc_hdev, cmd, data, flag, p); 167 if (rc != -1) 168 return rc; 169 else 170 return hidkbd_ioctl(kbd, cmd, data, flag, p); 171 } 172 } 173