261 lines
6.3 KiB
C
261 lines
6.3 KiB
C
/* $NetBSD: tc5165buf.c,v 1.11 2002/10/02 05:26:47 thorpej Exp $ */
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/*-
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* Copyright (c) 1999-2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by UCHIYAMA Yasushi.
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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. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Device driver for TOSHIBA TC5165BFTS, PHILIPS 74ALVC16241/245
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* buffer chip
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*/
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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/callout.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 <dev/hpc/hpckbdvar.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/tc5165bufvar.h>
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#define TC5165_ROW_MAX 16
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#define TC5165_COLUMN_MAX 8
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#ifdef TC5165DEBUG
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#define DPRINTF(arg) printf arg
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#else
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#define DPRINTF(arg)
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#endif
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struct tc5165buf_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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u_int16_t scc_buf[TC5165_COLUMN_MAX];
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int scc_enabled;
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int scc_queued;
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struct callout scc_soft_ch;
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struct hpckbd_ic_if scc_if;
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struct hpckbd_if *scc_hpckbd;
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};
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struct tc5165buf_softc {
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struct device sc_dev;
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struct tc5165buf_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 tc5165buf_match(struct device *, struct cfdata *, void *);
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void tc5165buf_attach(struct device *, struct device *, void *);
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int tc5165buf_intr(void *);
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int tc5165buf_poll(void *);
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void tc5165buf_soft(void *);
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void tc5165buf_ifsetup(struct tc5165buf_chip *);
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int tc5165buf_input_establish(void *, struct hpckbd_if *);
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struct tc5165buf_chip tc5165buf_chip;
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CFATTACH_DECL(tc5165buf, sizeof(struct tc5165buf_softc),
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tc5165buf_match, tc5165buf_attach, NULL, NULL);
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int
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tc5165buf_match(struct device *parent, struct cfdata *cf, 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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tc5165buf_attach(struct device *parent, struct device *self, void *aux)
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{
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struct cs_attach_args *ca = aux;
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struct tc5165buf_softc *sc = (void*)self;
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struct hpckbd_attach_args haa;
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printf(": ");
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sc->sc_tc = ca->ca_tc;
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sc->sc_chip = &tc5165buf_chip;
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callout_init(&sc->sc_chip->scc_soft_ch);
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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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return;
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}
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sc->sc_chip->scc_enabled = 0;
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if (ca->ca_irq1 != -1) {
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sc->sc_ih = tx_intr_establish(sc->sc_tc, ca->ca_irq1,
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IST_EDGE, IPL_TTY,
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tc5165buf_intr, sc);
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printf("interrupt mode");
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} else {
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sc->sc_ih = tx39_poll_establish(sc->sc_tc, 1, IPL_TTY,
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tc5165buf_intr, sc);
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printf("polling mode");
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}
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if (!sc->sc_ih) {
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printf(" can't establish interrupt\n");
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return;
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}
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printf("\n");
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/* setup upper interface */
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tc5165buf_ifsetup(sc->sc_chip);
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haa.haa_ic = &sc->sc_chip->scc_if;
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config_found(self, &haa, hpckbd_print);
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}
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void
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tc5165buf_ifsetup(struct tc5165buf_chip *scc)
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{
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scc->scc_if.hii_ctx = scc;
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scc->scc_if.hii_establish = tc5165buf_input_establish;
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scc->scc_if.hii_poll = tc5165buf_poll;
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}
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int
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tc5165buf_cnattach(paddr_t addr)
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{
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struct tc5165buf_chip *scc = &tc5165buf_chip;
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scc->scc_csh = MIPS_PHYS_TO_KSEG1(addr);
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tc5165buf_ifsetup(scc);
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hpckbd_cnattach(&scc->scc_if);
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return (0);
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}
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int
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tc5165buf_input_establish(void *ic, struct hpckbd_if *kbdif)
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{
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struct tc5165buf_chip *scc = ic;
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/* save hpckbd interface */
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scc->scc_hpckbd = kbdif;
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scc->scc_enabled = 1;
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return (0);
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}
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int
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tc5165buf_intr(void *arg)
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{
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struct tc5165buf_softc *sc = arg;
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struct tc5165buf_chip *scc = sc->sc_chip;
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if (!scc->scc_enabled || scc->scc_queued)
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return (0);
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scc->scc_queued = 1;
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callout_reset(&scc->scc_soft_ch, 1, tc5165buf_soft, scc);
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return (0);
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}
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int
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tc5165buf_poll(void *arg)
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{
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struct tc5165buf_chip *scc = arg;
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if (!scc->scc_enabled)
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return (POLL_CONT);
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tc5165buf_soft(arg);
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return (POLL_CONT);
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}
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void
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tc5165buf_soft(void *arg)
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{
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struct tc5165buf_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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u_int16_t mask, rpat, edge;
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int i, j, type, val;
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int s;
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hpckbd_input_hook(scc->scc_hpckbd);
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/* clear scanlines */
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(void)bus_space_read_2(t, h, 0);
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delay(3);
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for (i = 0; i < TC5165_COLUMN_MAX; i++) {
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rpat = bus_space_read_2(t, h, 2 << i);
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delay(3);
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(void)bus_space_read_2(t, h, 0);
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delay(3);
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if ((edge = (rpat ^ scc->scc_buf[i]))) {
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scc->scc_buf[i] = rpat;
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for (j = 0, mask = 1; j < TC5165_ROW_MAX;
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j++, mask <<= 1) {
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if (mask & edge) {
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type = mask & rpat ? 1 : 0;
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val = j * TC5165_COLUMN_MAX + i;
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DPRINTF(("%d %d\n", j, i));
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hpckbd_input(scc->scc_hpckbd,
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type, val);
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}
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}
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}
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}
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s = spltty();
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scc->scc_queued = 0;
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splx(s);
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}
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