/* $NetBSD: tc5165buf.c,v 1.5 2000/03/23 06:38:02 thorpej Exp $ */ /* * Copyright (c) 1999, 2000, by UCHIYAMA Yasushi * All rights reserved. * * 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. The name of the developer may NOT be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * */ /* * Device driver for TOSHIBA TC5165BFTS, PHILIPS 74ALVC16241/245 * buffer chip */ #include "opt_tx39_debug.h" #include "opt_use_poll.h" #include #include #include #include #include #include #include #include #include #include #define TC5165_ROW_MAX 16 #define TC5165_COLUMN_MAX 8 #ifdef TC5165DEBUG #define DPRINTF(arg) printf arg #else #define DPRINTF(arg) #endif struct tc5165buf_chip { bus_space_tag_t scc_cst; bus_space_handle_t scc_csh; u_int16_t scc_buf[TC5165_COLUMN_MAX]; int scc_enabled; int scc_queued; struct callout scc_soft_ch; struct skbd_controller scc_controller; }; struct tc5165buf_softc { struct device sc_dev; struct tc5165buf_chip *sc_chip; tx_chipset_tag_t sc_tc; void *sc_ih; }; int tc5165buf_match __P((struct device*, struct cfdata*, void*)); void tc5165buf_attach __P((struct device*, struct device*, void*)); int tc5165buf_intr __P((void*)); int tc5165buf_poll __P((void*)); void tc5165buf_soft __P((void*)); void tc5165buf_ifsetup __P((struct tc5165buf_chip*)); int tc5165buf_input_establish __P((void*, int (*) __P((void*, int, int)), void (*) __P((void*)), void*)); struct tc5165buf_chip tc5165buf_chip; struct cfattach tc5165buf_ca = { sizeof(struct tc5165buf_softc), tc5165buf_match, tc5165buf_attach }; int tc5165buf_match(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { return 1; } void tc5165buf_attach(parent, self, aux) struct device *parent; struct device *self; void *aux; { struct cs_attach_args *ca = aux; struct tc5165buf_softc *sc = (void*)self; struct skbd_attach_args saa; printf(": "); sc->sc_tc = ca->ca_tc; sc->sc_chip = &tc5165buf_chip; callout_init(&sc->sc_chip->scc_soft_ch); sc->sc_chip->scc_cst = ca->ca_csio.cstag; if (bus_space_map(sc->sc_chip->scc_cst, ca->ca_csio.csbase, ca->ca_csio.cssize, 0, &sc->sc_chip->scc_csh)) { printf("can't map i/o space\n"); return; } sc->sc_chip->scc_enabled = 0; if (ca->ca_irq1 != -1) { sc->sc_ih = tx_intr_establish(sc->sc_tc, ca->ca_irq1, IST_EDGE, IPL_TTY, tc5165buf_intr, sc); printf("interrupt mode"); } else { sc->sc_ih = tx39_poll_establish(sc->sc_tc, 1, IPL_TTY, tc5165buf_intr, sc); printf("polling mode"); } if (!sc->sc_ih) { printf(" can't establish interrupt\n"); return; } printf("\n"); /* setup upper interface */ tc5165buf_ifsetup(sc->sc_chip); saa.saa_ic = &sc->sc_chip->scc_controller; config_found(self, &saa, skbd_print); } void tc5165buf_ifsetup(scc) struct tc5165buf_chip *scc; { scc->scc_controller.skif_v = scc; scc->scc_controller.skif_establish = tc5165buf_input_establish; scc->scc_controller.skif_poll = tc5165buf_poll; } int tc5165buf_cnattach(addr) paddr_t addr; { struct tc5165buf_chip *scc = &tc5165buf_chip; scc->scc_csh = MIPS_PHYS_TO_KSEG1(addr); tc5165buf_ifsetup(scc); skbd_cnattach(&scc->scc_controller); return 0; } int tc5165buf_input_establish(ic, inputfunc, inputhookfunc, arg) void *ic; int (*inputfunc) __P((void*, int, int)); void (*inputhookfunc) __P((void*)); void *arg; { struct tc5165buf_chip *scc = ic; /* setup lower interface */ scc->scc_controller.sk_v = arg; scc->scc_controller.sk_input = inputfunc; scc->scc_controller.sk_input_hook = inputhookfunc; scc->scc_enabled = 1; return 0; } int tc5165buf_intr(arg) void *arg; { struct tc5165buf_softc *sc = arg; struct tc5165buf_chip *scc = sc->sc_chip; if (!scc->scc_enabled || scc->scc_queued) return 0; scc->scc_queued = 1; callout_reset(&scc->scc_soft_ch, 1, tc5165buf_soft, scc); return 0; } int tc5165buf_poll(arg) void *arg; { struct tc5165buf_chip *scc = arg; if (!scc->scc_enabled) return POLL_CONT; tc5165buf_soft(arg); return POLL_CONT; } void tc5165buf_soft(arg) void *arg; { struct tc5165buf_chip *scc = arg; bus_space_tag_t t = scc->scc_cst; bus_space_handle_t h = scc->scc_csh; u_int16_t mask, rpat, edge; int i, j, type, val; skbd_tag_t controller; int s; controller = &scc->scc_controller; skbd_input_hook(controller); /* clear scanlines */ (void)bus_space_read_2(t, h, 0); delay(3); for (i = 0; i < TC5165_COLUMN_MAX; i++) { rpat = bus_space_read_2(t, h, 2 << i); delay(3); (void)bus_space_read_2(t, h, 0); delay(3); if ((edge = (rpat ^ scc->scc_buf[i]))) { scc->scc_buf[i] = rpat; for (j = 0, mask = 1; j < TC5165_ROW_MAX; j++, mask <<= 1) { if (mask & edge) { type = mask & rpat ? 1 : 0; val = j * TC5165_COLUMN_MAX + i; DPRINTF(("%d %d\n", j, i)); skbd_input(controller, type, val); } } } } s = spltty(); scc->scc_queued = 0; splx(s); }