MITUBISHI M38813 keyboard controller.
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sys/arch/hpcmips/dev/m38813c.c
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245
sys/arch/hpcmips/dev/m38813c.c
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/* $NetBSD: m38813c.c,v 1.1 1999/12/08 15:51:07 uch Exp $ */
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/*
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* Copyright (c) 1999, by UCHIYAMA Yasushi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the developer may NOT be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/*
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* Device driver for MITUBISHI M38813 controller
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*/
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#include "opt_tx39_debug.h"
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#include "opt_use_poll.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <hpcmips/tx/tx39var.h>
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#include <hpcmips/tx/txcsbusvar.h>
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#include <hpcmips/dev/m38813cvar.h>
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#include <hpcmips/dev/skbdvar.h>
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struct m38813c_chip {
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bus_space_tag_t scc_cst;
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bus_space_handle_t scc_csh;
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int scc_enabled;
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int t_lastchar;
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int t_extended;
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int t_extended1;
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struct skbd_controller scc_controller;
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};
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struct m38813c_softc {
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struct device sc_dev;
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struct m38813c_chip *sc_chip;
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tx_chipset_tag_t sc_tc;
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void *sc_ih;
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};
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int m38813c_match __P((struct device*, struct cfdata*, void*));
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void m38813c_attach __P((struct device*, struct device*, void*));
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int m38813c_intr __P((void*));
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int m38813c_poll __P((void*));
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void m38813c_ifsetup __P((struct m38813c_chip*));
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int m38813c_input_establish __P((void*, int (*) __P((void*, int, int)),
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void (*) __P((void*)), void*));
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struct m38813c_chip m38813c_chip;
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struct cfattach m38813c_ca = {
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sizeof(struct m38813c_softc), m38813c_match, m38813c_attach
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};
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int
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m38813c_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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return 1;
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}
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void
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m38813c_attach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct cs_attach_args *ca = aux;
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struct m38813c_softc *sc = (void*)self;
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struct skbd_attach_args saa;
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sc->sc_tc = ca->ca_tc;
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sc->sc_chip = &m38813c_chip;
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sc->sc_chip->scc_cst = ca->ca_csio.cstag;
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if (bus_space_map(sc->sc_chip->scc_cst, ca->ca_csio.csbase,
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ca->ca_csio.cssize, 0, &sc->sc_chip->scc_csh)) {
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printf(": can't map i/o space\n");
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}
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#ifndef USE_POLL
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#error options USE_POLL requied.
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#endif
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if (!(sc->sc_ih = tx39_poll_establish(sc->sc_tc, 5, IST_EDGE,
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IPL_TTY, m38813c_intr,
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sc))) {
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printf(": can't establish interrupt\n");
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}
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printf("\n");
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/* setup upper interface */
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m38813c_ifsetup(sc->sc_chip);
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saa.saa_ic = &sc->sc_chip->scc_controller;
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config_found(self, &saa, skbd_print);
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}
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void
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m38813c_ifsetup(scc)
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struct m38813c_chip *scc;
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{
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scc->scc_controller.skif_v = scc;
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scc->scc_controller.skif_establish = m38813c_input_establish;
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scc->scc_controller.skif_poll = m38813c_intr;
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}
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int
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m38813c_cnattach(addr)
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paddr_t addr;
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{
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struct m38813c_chip *scc = &m38813c_chip;
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scc->scc_csh = MIPS_PHYS_TO_KSEG1(addr);
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m38813c_ifsetup(scc);
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skbd_cnattach(&scc->scc_controller);
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return 0;
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}
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int
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m38813c_input_establish(ic, inputfunc, inputhookfunc, arg)
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void *ic;
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int (*inputfunc) __P((void*, int, int));
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void (*inputhookfunc) __P((void*));
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void *arg;
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{
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struct m38813c_chip *scc = ic;
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/* setup lower interface */
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scc->scc_controller.sk_v = arg;
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scc->scc_controller.sk_input = inputfunc;
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scc->scc_controller.sk_input_hook = inputhookfunc;
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scc->scc_enabled = 1;
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return 0;
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}
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#define KBR_EXTENDED0 0xE0 /* extended key sequence */
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#define KBR_EXTENDED1 0xE1 /* extended key sequence */
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int
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m38813c_intr(arg)
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void *arg;
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{
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struct m38813c_softc *sc = arg;
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return m38813c_poll(sc->sc_chip);
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}
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int
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m38813c_poll(arg)
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void *arg;
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{
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struct m38813c_chip *scc = arg;
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bus_space_tag_t t = scc->scc_cst;
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bus_space_handle_t h = scc->scc_csh;
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int datain, type, key;
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if (!scc->scc_enabled) {
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return 0;
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}
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datain= bus_space_read_1(t, h, 0);
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skbd_input_hook(&scc->scc_controller);
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if (datain == KBR_EXTENDED0) {
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scc->t_extended = 1;
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return 0;
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} else if (datain == KBR_EXTENDED1) {
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scc->t_extended1 = 2;
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return 0;
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}
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/* map extended keys to (unused) codes 128-254 */
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key = (datain & 0x7f) | (scc->t_extended ? 0x80 : 0);
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scc->t_extended = 0;
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/*
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* process BREAK key (EXT1 1D 45 EXT1 9D C5):
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* map to (unused) code 7F
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*/
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if (scc->t_extended1 == 2 && (datain == 0x1d || datain == 0x9d)) {
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scc->t_extended1 = 1;
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return 0;
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} else if (scc->t_extended1 == 1 &&
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(datain == 0x45 || datain == 0xc5)) {
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scc->t_extended1 = 0;
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key = 0x7f;
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} else if (scc->t_extended1 > 0) {
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scc->t_extended1 = 0;
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}
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if (datain & 0x80) {
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scc->t_lastchar = 0;
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type = 0;
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} else {
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/* Always ignore typematic keys */
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if (key == scc->t_lastchar)
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return 0;
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scc->t_lastchar = key;
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type = 1;
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}
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skbd_input(&scc->scc_controller, type, key);
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return 0;
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}
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29
sys/arch/hpcmips/dev/m38813cvar.h
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29
sys/arch/hpcmips/dev/m38813cvar.h
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@ -0,0 +1,29 @@
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/* $NetBSD: m38813cvar.h,v 1.1 1999/12/08 15:51:07 uch Exp $ */
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/*
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* Copyright (c) 1999, by UCHIYAMA Yasushi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the developer may NOT be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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int m38813c_cnattach __P((paddr_t));
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