Annotation of src/sys/dev/ic/spic.c, Revision 1.1.8.2
1.1.8.2 ! jdolecek 1: /* $NetBSD: spic.c,v 1.1.8.1 2002/06/23 17:46:51 jdolecek Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2002 The NetBSD Foundation, Inc.
! 5: * All rights reserved.
! 6: *
! 7: * This code is derived from software contributed to The NetBSD Foundation
! 8: * by Lennart Augustsson (lennart@augustsson.net) at
! 9: * Carlstedt Research & Technology.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: /*
! 41: * The SPIC is used on some Sony Vaios to handle the jog dial and other
! 42: * peripherals.
! 43: * The protocol used by the SPIC seems to vary wildly among the different
! 44: * models, and I've found no documentation.
! 45: * This file handles the jog dial on the SRX77 model, and perhaps nothing
! 46: * else.
! 47: *
! 48: * The general way of talking to the SPIC was gleaned from the Linux and
! 49: * FreeBSD drivers. The hex numbers were taken from these drivers (they
! 50: * come from reverese engineering.)
! 51: *
! 52: * TODO:
! 53: * Make it handle more models.
! 54: * Figure out why the interrupt mode doesn't work.
! 55: */
! 56:
! 57:
! 58: #include <sys/cdefs.h>
! 59: __KERNEL_RCSID(0, "$NetBSD: spic.c,v 1.1.8.1 2002/06/23 17:46:51 jdolecek Exp $");
! 60:
! 61: #include <sys/param.h>
! 62: #include <sys/systm.h>
! 63: #include <sys/device.h>
! 64: #include <sys/proc.h>
! 65: #include <sys/kernel.h>
! 66: #include <sys/callout.h>
! 67:
! 68: #include <machine/bus.h>
! 69:
! 70: #include <dev/ic/spicvar.h>
! 71:
! 72: #include <dev/wscons/wsconsio.h>
! 73: #include <dev/wscons/wsmousevar.h>
! 74:
! 75: #define POLLRATE (hz/30)
! 76:
! 77: /* Some hardware constants */
! 78: #define SPIC_PORT1 0
! 79: #define SPIC_PORT2 4
! 80:
! 81: #ifdef SPIC_DEBUG
! 82: int spicdebug = 0;
! 83: #endif
! 84:
! 85: static int spic_enable(void *);
! 86: static void spic_disable(void *);
! 87: static int spic_ioctl(void *, u_long, caddr_t, int, struct proc *);
! 88:
! 89: static const struct wsmouse_accessops spic_accessops = {
! 90: spic_enable,
! 91: spic_ioctl,
! 92: spic_disable,
! 93: };
! 94:
! 95: #define SPIC_COMMAND(quiet, command) do { \
! 96: unsigned int n = 10000; \
! 97: while (--n && (command)) \
! 98: delay(1); \
! 99: if (n == 0 && !(quiet)) \
! 100: printf("spic: command failed at line %d\n", __LINE__); \
! 101: } while (0)
! 102:
! 103: #if 0
! 104: #define INB(sc, p) (delay(100), printf("inb(%x)=%x\n", (uint)sc->sc_ioh+p, bus_space_read_1(sc->sc_iot, sc->sc_ioh, p)), delay(100), bus_space_read_1(sc->sc_iot, sc->sc_ioh, (p)))
! 105: #define OUTB(sc, v, p) do { delay(100); bus_space_write_1(sc->sc_iot, sc->sc_ioh, (p), (v)); printf("outb(%x, %x)\n", (uint)sc->sc_ioh+p, v); } while(0)
! 106: #else
! 107: #define INB(sc, p) (delay(100), bus_space_read_1(sc->sc_iot, sc->sc_ioh, (p)))
! 108: #define OUTB(sc, v, p) do { delay(100); bus_space_write_1(sc->sc_iot, sc->sc_ioh, (p), (v)); } while(0)
! 109: #endif
! 110:
! 111: static u_int8_t
! 112: spic_call1(struct spic_softc *sc, u_int8_t dev)
! 113: {
! 114: u_int8_t v1, v2;
! 115:
! 116: SPIC_COMMAND(0, INB(sc, SPIC_PORT2) & 2);
! 117: OUTB(sc, dev, SPIC_PORT2);
! 118: v1 = INB(sc, SPIC_PORT2);
! 119: v2 = INB(sc, SPIC_PORT1);
! 120: return v2;
! 121: }
! 122:
! 123: static u_int8_t
! 124: spic_call2(struct spic_softc *sc, u_int8_t dev, u_int8_t fn)
! 125: {
! 126: u_int8_t v1;
! 127:
! 128: SPIC_COMMAND(0, INB(sc, SPIC_PORT2) & 2);
! 129: OUTB(sc, dev, SPIC_PORT2);
! 130: SPIC_COMMAND(0, INB(sc, SPIC_PORT2) & 2);
! 131: OUTB(sc, fn, SPIC_PORT1);
! 132: v1 = INB(sc, SPIC_PORT1);
! 133: return v1;
! 134: }
! 135:
! 136: /* Interrupt handler: some event is available */
! 137: int
! 138: spic_intr(void *v) {
! 139: struct spic_softc *sc = v;
! 140: u_int8_t v1, v2;
! 141: int dz, buttons;
! 142:
! 143: v1 = INB(sc, SPIC_PORT1);
! 144: v2 = INB(sc, SPIC_PORT2);
! 145:
! 146: buttons = 0;
! 147: if (v1 & 0x40)
! 148: buttons |= 1 << 1;
! 149: if (v1 & 0x20)
! 150: buttons |= 1 << 5;
! 151: dz = v1 & 0x1f;
! 152: switch (dz) {
! 153: case 0:
! 154: case 1:
! 155: case 2:
! 156: case 3:
! 157: break;
! 158: case 0x1f:
! 159: case 0x1e:
! 160: case 0x1d:
! 161: dz -= 0x20;
! 162: break;
! 163: default:
! 164: printf("spic: v1=0x%02x v2=0x%02x\n", v1, v2);
! 165: goto skip;
! 166: }
! 167:
! 168: if (!sc->sc_enabled) {
! 169: /*printf("spic: not enabled\n");*/
! 170: goto skip;
! 171: }
! 172:
! 173: if (dz != 0 || buttons != sc->sc_buttons) {
! 174: #ifdef SPIC_DEBUG
! 175: if (spicdebug)
! 176: printf("spic: but=0x%x dz=%d v1=0x%02x v2=0x%02x\n",
! 177: buttons, dz, v1, v2);
! 178: #endif
! 179: sc->sc_buttons = buttons;
! 180: if (sc->sc_wsmousedev != NULL) {
! 181: wsmouse_input(sc->sc_wsmousedev, buttons, 0, 0, dz,
! 182: WSMOUSE_INPUT_DELTA);
! 183: }
! 184: }
! 185:
! 186: skip:
! 187: spic_call2(sc, 0x81, 0xff); /* Clear event */
! 188: return (1);
! 189: }
! 190:
! 191: static void
! 192: spictimeout(void *v)
! 193: {
! 194: struct spic_softc *sc = v;
! 195: int s = spltty();
! 196: spic_intr(v);
! 197: splx(s);
! 198: callout_reset(&sc->sc_poll, POLLRATE, spictimeout, sc);
! 199: }
! 200:
! 201: void
! 202: spic_attach(struct spic_softc *sc)
! 203: {
! 204: struct wsmousedev_attach_args a;
! 205:
! 206: #ifdef SPIC_DEBUG
! 207: if (spicdebug)
! 208: printf("spic_attach %x %x\n", sc->sc_iot, (uint)sc->sc_ioh);
! 209: #endif
! 210:
! 211: callout_init(&sc->sc_poll);
! 212:
! 213: spic_call1(sc, 0x82);
! 214: spic_call2(sc, 0x81, 0xff);
! 215: spic_call1(sc, 0x92); /* or 0x82 */
! 216:
! 217: a.accessops = &spic_accessops;
! 218: a.accesscookie = sc;
! 219: sc->sc_wsmousedev = config_found(&sc->sc_dev, &a, wsmousedevprint);
! 220: }
! 221:
! 222:
! 223: static int
! 224: spic_enable(void *v)
! 225: {
! 226: struct spic_softc *sc = v;
! 227:
! 228: if (sc->sc_enabled)
! 229: return (EBUSY);
! 230:
! 231: sc->sc_enabled = 1;
! 232: sc->sc_buttons = 0;
! 233:
! 234: #ifdef SPIC_DEBUG
! 235: if (spicdebug)
! 236: printf("spic_enable\n");
! 237: #endif
! 238:
! 239: callout_reset(&sc->sc_poll, POLLRATE, spictimeout, sc);
! 240:
! 241: return (0);
! 242: }
! 243:
! 244: static void
! 245: spic_disable(void *v)
! 246: {
! 247: struct spic_softc *sc = v;
! 248:
! 249: #ifdef DIAGNOSTIC
! 250: if (!sc->sc_enabled) {
! 251: printf("spic_disable: not enabled\n");
! 252: return;
! 253: }
! 254: #endif
! 255:
! 256: callout_stop(&sc->sc_poll);
! 257:
! 258: sc->sc_enabled = 0;
! 259:
! 260: #ifdef SPIC_DEBUG
! 261: if (spicdebug)
! 262: printf("spic_disable\n");
! 263: #endif
! 264: }
! 265:
! 266: static int
! 267: spic_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p)
! 268: {
! 269: switch (cmd) {
! 270: case WSMOUSEIO_GTYPE:
! 271: /* XXX this is not really correct */
! 272: *(u_int *)data = WSMOUSE_TYPE_PS2;
! 273: return (0);
! 274: }
! 275:
! 276: return (-1);
! 277: }
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