qms.c revision 1.14
1 /* $NetBSD: qms.c,v 1.14 2008/04/28 20:23:14 martin 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 1.14 2008/04/28 20:23:14 martin 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 <machine/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 struct device sc_dev; 62 struct device *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 u_int16_t lastx; 71 u_int16_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(struct device *, struct cfdata *, void *); 81 static void qms_attach(struct device *, struct device *, 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(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(struct device *parent, struct cfdata *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(struct device *parent, struct device *self, void *aux) 110 { 111 struct qms_softc *sc = (void *)self; 112 struct qms_attach_args *qa = aux; 113 struct wsmousedev_attach_args wsmouseargs; 114 115 sc->sc_iot = qa->qa_iot; 116 sc->sc_ioh = qa->qa_ioh; 117 sc->sc_butioh = qa->qa_ioh_but; 118 119 /* set up wsmouse attach arguments */ 120 wsmouseargs.accessops = &qms_accessops; 121 wsmouseargs.accesscookie = sc; 122 123 printf("\n"); 124 125 sc->sc_wsmousedev = 126 config_found(&sc->sc_dev, &wsmouseargs, wsmousedevprint); 127 128 callout_init(&sc->sc_callout, 0); 129 } 130 131 132 static int 133 qms_enable(void *cookie) 134 { 135 struct qms_softc *sc = cookie; 136 int b; 137 138 /* We don't want the mouse to warp on open. */ 139 sc->lastx = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX); 140 sc->lasty = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY); 141 b = bus_space_read_1(sc->sc_iot, sc->sc_butioh, QMS_BUTTONS) & 0x70; 142 143 /* patch up the buttons */ 144 b >>= 4; 145 sc->lastb = ~( ((b & 1)<<2) | (b & 2) | ((b & 4)>>2)); 146 147 callout_reset(&sc->sc_callout, hz / 100, qms_intr, sc); 148 return 0; 149 } 150 151 152 static void 153 qms_disable(void *cookie) 154 { 155 struct qms_softc *sc = cookie; 156 157 callout_stop(&sc->sc_callout); 158 } 159 160 161 static int 162 qms_ioctl(void *cookie, u_long cmd, void *data, int flag, struct lwp *l) 163 { 164 165 switch (cmd) { 166 case WSMOUSEIO_GTYPE: 167 *(int *)data = WSMOUSE_TYPE_ARCHIMEDES; 168 return 0; 169 } 170 171 return EPASSTHROUGH; 172 } 173 174 175 static void 176 qms_intr(void *arg) 177 { 178 struct qms_softc *sc = arg; 179 int b; 180 u_int16_t x, y; 181 int16_t dx, dy; 182 183 x = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX); 184 y = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY); 185 b = bus_space_read_1(sc->sc_iot, sc->sc_butioh, QMS_BUTTONS) & 0x70; 186 187 /* patch up the buttons */ 188 b >>= 4; 189 b = ~( ((b & 1)<<2) | (b & 2) | ((b & 4)>>2)); 190 191 if ((x != sc->lastx) || (y != sc->lasty) || (b != sc->lastb)) { 192 /* This assumes that int16_t is two's complement. */ 193 dx = x - sc->lastx; 194 dy = y - sc->lasty; 195 wsmouse_input(sc->sc_wsmousedev, 196 b, 197 dx, dy, 0, 0, 198 WSMOUSE_INPUT_DELTA); 199 200 /* save old values */ 201 sc->lastx = x; 202 sc->lasty = y; 203 sc->lastb = b; 204 } 205 callout_reset(&sc->sc_callout, hz / 100, qms_intr, sc); 206 } 207 208 209 /* end of qms.c */ 210
Indexes created Tue Sep 30 11:09:46 GMT 2025