qms.c revision 1.21
1 /* $NetBSD: qms.c,v 1.21 2021/08/07 16:18:44 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 Reinoud Zandijk 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Reinoud Zandijk 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 /* 32 * Quadrature mouse driver for the wscons as used in the IOMD 33 */ 34 35 #include <sys/param.h> 36 37 __KERNEL_RCSID(0, "$NetBSD: qms.c,v 1.21 2021/08/07 16:18:44 thorpej Exp $"); 38 39 #include <sys/callout.h> 40 #include <sys/device.h> 41 #include <sys/errno.h> 42 #include <sys/ioctl.h> 43 #include <sys/kernel.h> 44 #include <sys/malloc.h> 45 #include <sys/proc.h> 46 #include <sys/tty.h> 47 #include <sys/types.h> 48 #include <sys/syslog.h> 49 #include <sys/systm.h> 50 #include <sys/select.h> 51 52 #include <sys/bus.h> 53 #include <machine/intr.h> 54 55 #include <arm/iomd/iomdvar.h> 56 57 #include <dev/wscons/wsconsio.h> 58 #include <dev/wscons/wsmousevar.h> 59 60 struct qms_softc { 61 device_t sc_dev; 62 device_t sc_wsmousedev; 63 64 bus_space_tag_t sc_iot; /* bus tag */ 65 bus_space_handle_t sc_ioh; /* bus handle for XY */ 66 bus_space_handle_t sc_butioh; /* bus handle for buttons */ 67 68 struct callout sc_callout; 69 70 uint16_t lastx; 71 uint16_t lasty; 72 int lastb; 73 }; 74 75 /* Offsets of hardware registers */ 76 #define QMS_MOUSEX 0 /* 16 bits X register */ 77 #define QMS_MOUSEY 1 /* 16 bits Y register */ 78 #define QMS_BUTTONS 0 /* mouse buttons in bits 4,5,6 */ 79 80 static int qms_match(device_t , cfdata_t , void *); 81 static void qms_attach(device_t , device_t , void *); 82 83 static int qms_enable(void *); 84 static int qms_ioctl(void *, u_long, void *, int, struct lwp *); 85 static void qms_disable(void *cookie); 86 static void qms_intr(void *arg); 87 88 CFATTACH_DECL_NEW(qms, sizeof(struct qms_softc), 89 qms_match, qms_attach, NULL, NULL); 90 91 static struct wsmouse_accessops qms_accessops = { 92 qms_enable, qms_ioctl, qms_disable 93 }; 94 95 96 static int 97 qms_match(device_t parent, cfdata_t cf, void *aux) 98 { 99 struct qms_attach_args *qa = aux; 100 101 if (strcmp(qa->qa_name, "qms") == 0) 102 return 1; 103 104 return 0; 105 } 106 107 108 static void 109 qms_attach(device_t parent, device_t self, void *aux) 110 { 111 struct qms_softc *sc = device_private(self); 112 struct qms_attach_args *qa = aux; 113 struct wsmousedev_attach_args wsmouseargs; 114 115 sc->sc_dev = self; 116 sc->sc_iot = qa->qa_iot; 117 sc->sc_ioh = qa->qa_ioh; 118 sc->sc_butioh = qa->qa_ioh_but; 119 120 /* set up wsmouse attach arguments */ 121 wsmouseargs.accessops = &qms_accessops; 122 wsmouseargs.accesscookie = sc; 123 124 aprint_normal("\n"); 125 126 sc->sc_wsmousedev = 127 config_found(sc->sc_dev, &wsmouseargs, wsmousedevprint, CFARGS_NONE); 128 129 callout_init(&sc->sc_callout, 0); 130 } 131 132 133 static int 134 qms_enable(void *cookie) 135 { 136 struct qms_softc *sc = cookie; 137 int b; 138 139 /* We don't want the mouse to warp on open. */ 140 sc->lastx = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX); 141 sc->lasty = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY); 142 b = bus_space_read_1(sc->sc_iot, sc->sc_butioh, QMS_BUTTONS) & 0x70; 143 144 /* patch up the buttons */ 145 b >>= 4; 146 sc->lastb = ~( ((b & 1)<<2) | (b & 2) | ((b & 4)>>2)); 147 148 callout_reset(&sc->sc_callout, hz / 100, qms_intr, sc); 149 return 0; 150 } 151 152 153 static void 154 qms_disable(void *cookie) 155 { 156 struct qms_softc *sc = cookie; 157 158 callout_stop(&sc->sc_callout); 159 } 160 161 162 static int 163 qms_ioctl(void *cookie, u_long cmd, void *data, int flag, struct lwp *l) 164 { 165 166 switch (cmd) { 167 case WSMOUSEIO_GTYPE: 168 *(int *)data = WSMOUSE_TYPE_ARCHIMEDES; 169 return 0; 170 } 171 172 return EPASSTHROUGH; 173 } 174 175 176 static void 177 qms_intr(void *arg) 178 { 179 struct qms_softc *sc = arg; 180 int b; 181 uint16_t x, y; 182 int16_t dx, dy; 183 184 x = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX); 185 y = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY); 186 b = bus_space_read_1(sc->sc_iot, sc->sc_butioh, QMS_BUTTONS) & 0x70; 187 188 /* patch up the buttons */ 189 b >>= 4; 190 b = ~( ((b & 1)<<2) | (b & 2) | ((b & 4)>>2)); 191 192 if ((x != sc->lastx) || (y != sc->lasty) || (b != sc->lastb)) { 193 /* This assumes that int16_t is two's complement. */ 194 dx = x - sc->lastx; 195 dy = y - sc->lasty; 196 wsmouse_input(sc->sc_wsmousedev, 197 b, 198 dx, dy, 0, 0, 199 WSMOUSE_INPUT_DELTA); 200 201 /* save old values */ 202 sc->lastx = x; 203 sc->lasty = y; 204 sc->lastb = b; 205 } 206 callout_reset(&sc->sc_callout, hz / 100, qms_intr, sc); 207 } 208 209 210 /* end of qms.c */ 211
Indexes created Mon Sep 29 13:09:55 GMT 2025