1 /* $NetBSD: qms.c,v 1.13 2007/10/17 19:53:42 garbled 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 /* 39 * Quadrature mouse driver for the wscons as used in the IOMD 40 */ 41 42 #include <sys/param.h> 43 44 __KERNEL_RCSID(0, "$NetBSD: qms.c,v 1.13 2007/10/17 19:53:42 garbled Exp $"); 45 46 #include <sys/callout.h> 47 #include <sys/device.h> 48 #include <sys/errno.h> 49 #include <sys/ioctl.h> 50 #include <sys/kernel.h> 51 #include <sys/malloc.h> 52 #include <sys/proc.h> 53 #include <sys/tty.h> 54 #include <sys/types.h> 55 #include <sys/syslog.h> 56 #include <sys/systm.h> 57 #include <sys/select.h> 58 59 #include <machine/bus.h> 60 #include <machine/intr.h> 61 62 #include <arm/iomd/iomdvar.h> 63 64 #include <dev/wscons/wsconsio.h> 65 #include <dev/wscons/wsmousevar.h> 66 67 struct qms_softc { 68 struct device sc_dev; 69 struct device *sc_wsmousedev; 70 71 bus_space_tag_t sc_iot; /* bus tag */ 72 bus_space_handle_t sc_ioh; /* bus handle for XY */ 73 bus_space_handle_t sc_butioh; /* bus handle for buttons */ 74 75 struct callout sc_callout; 76 77 u_int16_t lastx; 78 u_int16_t lasty; 79 int lastb; 80 }; 81 82 /* Offsets of hardware registers */ 83 #define QMS_MOUSEX 0 /* 16 bits X register */ 84 #define QMS_MOUSEY 1 /* 16 bits Y register */ 85 #define QMS_BUTTONS 0 /* mouse buttons in bits 4,5,6 */ 86 87 static int qms_match(struct device *, struct cfdata *, void *); 88 static void qms_attach(struct device *, struct device *, void *); 89 90 static int qms_enable(void *); 91 static int qms_ioctl(void *, u_long, void *, int, struct lwp *); 92 static void qms_disable(void *cookie); 93 static void qms_intr(void *arg); 94 95 CFATTACH_DECL(qms, sizeof(struct qms_softc), 96 qms_match, qms_attach, NULL, NULL); 97 98 static struct wsmouse_accessops qms_accessops = { 99 qms_enable, qms_ioctl, qms_disable 100 }; 101 102 103 static int 104 qms_match(struct device *parent, struct cfdata *cf, void *aux) 105 { 106 struct qms_attach_args *qa = aux; 107 108 if (strcmp(qa->qa_name, "qms") == 0) 109 return 1; 110 111 return 0; 112 } 113 114 115 static void 116 qms_attach(struct device *parent, struct device *self, void *aux) 117 { 118 struct qms_softc *sc = (void *)self; 119 struct qms_attach_args *qa = aux; 120 struct wsmousedev_attach_args wsmouseargs; 121 122 sc->sc_iot = qa->qa_iot; 123 sc->sc_ioh = qa->qa_ioh; 124 sc->sc_butioh = qa->qa_ioh_but; 125 126 /* set up wsmouse attach arguments */ 127 wsmouseargs.accessops = &qms_accessops; 128 wsmouseargs.accesscookie = sc; 129 130 printf("\n"); 131 132 sc->sc_wsmousedev = 133 config_found(&sc->sc_dev, &wsmouseargs, wsmousedevprint); 134 135 callout_init(&sc->sc_callout, 0); 136 } 137 138 139 static int 140 qms_enable(void *cookie) 141 { 142 struct qms_softc *sc = cookie; 143 int b; 144 145 /* We don't want the mouse to warp on open. */ 146 sc->lastx = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX); 147 sc->lasty = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY); 148 b = bus_space_read_1(sc->sc_iot, sc->sc_butioh, QMS_BUTTONS) & 0x70; 149 150 /* patch up the buttons */ 151 b >>= 4; 152 sc->lastb = ~( ((b & 1)<<2) | (b & 2) | ((b & 4)>>2)); 153 154 callout_reset(&sc->sc_callout, hz / 100, qms_intr, sc); 155 return 0; 156 } 157 158 159 static void 160 qms_disable(void *cookie) 161 { 162 struct qms_softc *sc = cookie; 163 164 callout_stop(&sc->sc_callout); 165 } 166 167 168 static int 169 qms_ioctl(void *cookie, u_long cmd, void *data, int flag, struct lwp *l) 170 { 171 172 switch (cmd) { 173 case WSMOUSEIO_GTYPE: 174 *(int *)data = WSMOUSE_TYPE_ARCHIMEDES; 175 return 0; 176 } 177 178 return EPASSTHROUGH; 179 } 180 181 182 static void 183 qms_intr(void *arg) 184 { 185 struct qms_softc *sc = arg; 186 int b; 187 u_int16_t x, y; 188 int16_t dx, dy; 189 190 x = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEX); 191 y = bus_space_read_4(sc->sc_iot, sc->sc_ioh, QMS_MOUSEY); 192 b = bus_space_read_1(sc->sc_iot, sc->sc_butioh, QMS_BUTTONS) & 0x70; 193 194 /* patch up the buttons */ 195 b >>= 4; 196 b = ~( ((b & 1)<<2) | (b & 2) | ((b & 4)>>2)); 197 198 if ((x != sc->lastx) || (y != sc->lasty) || (b != sc->lastb)) { 199 /* This assumes that int16_t is two's complement. */ 200 dx = x - sc->lastx; 201 dy = y - sc->lasty; 202 wsmouse_input(sc->sc_wsmousedev, 203 b, 204 dx, dy, 0, 0, 205 WSMOUSE_INPUT_DELTA); 206 207 /* save old values */ 208 sc->lastx = x; 209 sc->lasty = y; 210 sc->lastb = b; 211 } 212 callout_reset(&sc->sc_callout, hz / 100, qms_intr, sc); 213 } 214 215 216 /* end of qms.c */ 217