/* $NetBSD: spic.c,v 1.2 2005/12/12 01:18:29 christos Exp $ */ /* * Copyright (c) 2002 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Lennart Augustsson (lennart@augustsson.net) at * Carlstedt Research & Technology. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * The SPIC is used on some Sony Vaios to handle the jog dial and other * peripherals. * The protocol used by the SPIC seems to vary wildly among the different * models, and I've found no documentation. * This file handles the jog dial on the SRX77 model, and perhaps nothing * else. * * The general way of talking to the SPIC was gleaned from the Linux and * FreeBSD drivers. The hex numbers were taken from these drivers (they * come from reverese engineering.) * * TODO: * Make it handle more models. * Figure out why the interrupt mode doesn't work. */ #include __KERNEL_RCSID(0, "$NetBSD: spic.c,v 1.2 2005/12/12 01:18:29 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #define POLLRATE (hz/30) /* Some hardware constants */ #define SPIC_PORT1 0 #define SPIC_PORT2 4 #ifdef SPIC_DEBUG int spicdebug = 0; #endif static int spic_enable(void *); static void spic_disable(void *); static int spic_ioctl(void *, u_long, caddr_t, int, struct lwp *); static const struct wsmouse_accessops spic_accessops = { spic_enable, spic_ioctl, spic_disable, }; #define SPIC_COMMAND(quiet, command) do { \ unsigned int n = 10000; \ while (--n && (command)) \ delay(1); \ if (n == 0 && !(quiet)) \ printf("spic: command failed at line %d\n", __LINE__); \ } while (0) #if 0 #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))) #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) #else #define INB(sc, p) (delay(100), bus_space_read_1(sc->sc_iot, sc->sc_ioh, (p))) #define OUTB(sc, v, p) do { delay(100); bus_space_write_1(sc->sc_iot, sc->sc_ioh, (p), (v)); } while(0) #endif static u_int8_t spic_call1(struct spic_softc *sc, u_int8_t dev) { u_int8_t v1, v2; SPIC_COMMAND(0, INB(sc, SPIC_PORT2) & 2); OUTB(sc, dev, SPIC_PORT2); v1 = INB(sc, SPIC_PORT2); v2 = INB(sc, SPIC_PORT1); return v2; } static u_int8_t spic_call2(struct spic_softc *sc, u_int8_t dev, u_int8_t fn) { u_int8_t v1; SPIC_COMMAND(0, INB(sc, SPIC_PORT2) & 2); OUTB(sc, dev, SPIC_PORT2); SPIC_COMMAND(0, INB(sc, SPIC_PORT2) & 2); OUTB(sc, fn, SPIC_PORT1); v1 = INB(sc, SPIC_PORT1); return v1; } /* Interrupt handler: some event is available */ int spic_intr(void *v) { struct spic_softc *sc = v; u_int8_t v1, v2; int dz, buttons; v1 = INB(sc, SPIC_PORT1); v2 = INB(sc, SPIC_PORT2); buttons = 0; if (v1 & 0x40) buttons |= 1 << 1; if (v1 & 0x20) buttons |= 1 << 5; dz = v1 & 0x1f; switch (dz) { case 0: case 1: case 2: case 3: break; case 0x1f: case 0x1e: case 0x1d: dz -= 0x20; break; default: printf("spic: v1=0x%02x v2=0x%02x\n", v1, v2); goto skip; } if (!sc->sc_enabled) { /*printf("spic: not enabled\n");*/ goto skip; } if (dz != 0 || buttons != sc->sc_buttons) { #ifdef SPIC_DEBUG if (spicdebug) printf("spic: but=0x%x dz=%d v1=0x%02x v2=0x%02x\n", buttons, dz, v1, v2); #endif sc->sc_buttons = buttons; if (sc->sc_wsmousedev != NULL) { wsmouse_input(sc->sc_wsmousedev, buttons, 0, 0, dz, WSMOUSE_INPUT_DELTA); } } skip: spic_call2(sc, 0x81, 0xff); /* Clear event */ return (1); } static void spictimeout(void *v) { struct spic_softc *sc = v; int s = spltty(); spic_intr(v); splx(s); callout_reset(&sc->sc_poll, POLLRATE, spictimeout, sc); } void spic_attach(struct spic_softc *sc) { struct wsmousedev_attach_args a; #ifdef SPIC_DEBUG if (spicdebug) printf("spic_attach %x %x\n", sc->sc_iot, (uint)sc->sc_ioh); #endif callout_init(&sc->sc_poll); spic_call1(sc, 0x82); spic_call2(sc, 0x81, 0xff); spic_call1(sc, 0x92); /* or 0x82 */ a.accessops = &spic_accessops; a.accesscookie = sc; sc->sc_wsmousedev = config_found(&sc->sc_dev, &a, wsmousedevprint); } static int spic_enable(void *v) { struct spic_softc *sc = v; if (sc->sc_enabled) return (EBUSY); sc->sc_enabled = 1; sc->sc_buttons = 0; #ifdef SPIC_DEBUG if (spicdebug) printf("spic_enable\n"); #endif callout_reset(&sc->sc_poll, POLLRATE, spictimeout, sc); return (0); } static void spic_disable(void *v) { struct spic_softc *sc = v; #ifdef DIAGNOSTIC if (!sc->sc_enabled) { printf("spic_disable: not enabled\n"); return; } #endif callout_stop(&sc->sc_poll); sc->sc_enabled = 0; #ifdef SPIC_DEBUG if (spicdebug) printf("spic_disable\n"); #endif } static int spic_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct lwp *l) { switch (cmd) { case WSMOUSEIO_GTYPE: /* XXX this is not really correct */ *(u_int *)data = WSMOUSE_TYPE_PS2; return (0); } return (-1); }