1 /* $NetBSD: qms.c,v 1.22 2022/09/27 06:36:42 skrll 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 1.22 2022/09/27 06:36:42 skrll 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/proc.h> 45 #include <sys/tty.h> 46 #include <sys/types.h> 47 #include <sys/syslog.h> 48 #include <sys/systm.h> 49 #include <sys/select.h> 50 51 #include <sys/bus.h> 52 #include <machine/intr.h> 53 54 #include <arm/iomd/iomdvar.h> 55 56 #include <dev/wscons/wsconsio.h> 57 #include <dev/wscons/wsmousevar.h> 58 59 struct qms_softc { 60 device_t sc_dev; 61 device_t sc_wsmousedev; 62 63 bus_space_tag_t sc_iot; /* bus tag */ 64 bus_space_handle_t sc_ioh; /* bus handle for XY */ 65 bus_space_handle_t sc_butioh; /* bus handle for buttons */ 66 67 struct callout sc_callout; 68 69 uint16_t lastx; 70 uint16_t lasty; 71 int lastb; 72 }; 73 74 /* Offsets of hardware registers */ 75 #define QMS_MOUSEX 0 /* 16 bits X register */ 76 #define QMS_MOUSEY 1 /* 16 bits Y register */ 77 #define QMS_BUTTONS 0 /* mouse buttons in bits 4,5,6 */ 78 79 static int qms_match(device_t , cfdata_t , void *); 80 static void qms_attach(device_t , device_t , void *); 81 82 static int qms_enable(void *); 83 static int qms_ioctl(void *, u_long, void *, int, struct lwp *); 84 static void qms_disable(void *cookie); 85 static void qms_intr(void *arg); 86 87 CFATTACH_DECL_NEW(qms, sizeof(struct qms_softc), 88 qms_match, qms_attach, NULL, NULL); 89 90 static struct wsmouse_accessops qms_accessops = { 91 qms_enable, qms_ioctl, qms_disable 92 }; 93 94 95 static int 96 qms_match(device_t parent, cfdata_t cf, void *aux) 97 { 98 struct qms_attach_args *qa = aux; 99 100 if (strcmp(qa->qa_name, "qms") == 0) 101 return 1; 102 103 return 0; 104 } 105 106 107 static void 108 qms_attach(device_t parent, device_t self, void *aux) 109 { 110 struct qms_softc *sc = device_private(self); 111 struct qms_attach_args *qa = aux; 112 struct wsmousedev_attach_args wsmouseargs; 113 114 sc->sc_dev = self; 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 aprint_normal("\n"); 124 125 sc->sc_wsmousedev = 126 config_found(sc->sc_dev, &wsmouseargs, wsmousedevprint, CFARGS_NONE); 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 uint16_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 Sat Sep 20 22:09:52 GMT 2025