/* $NetBSD: tc5165buf.c,v 1.16 2008/04/28 20:23:21 martin Exp $ */ /*- * Copyright (c) 1999-2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by UCHIYAMA Yasushi. * * 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. * * 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. */ /* * Device driver for TOSHIBA TC5165BFTS, PHILIPS 74ALVC16241/245 * buffer chip */ #include __KERNEL_RCSID(0, "$NetBSD: tc5165buf.c,v 1.16 2008/04/28 20:23:21 martin Exp $"); #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 hpckbd_ic_if scc_if; struct hpckbd_if *scc_hpckbd; }; struct tc5165buf_softc { struct device sc_dev; struct tc5165buf_chip *sc_chip; tx_chipset_tag_t sc_tc; void *sc_ih; }; int tc5165buf_match(struct device *, struct cfdata *, void *); void tc5165buf_attach(struct device *, struct device *, void *); int tc5165buf_intr(void *); int tc5165buf_poll(void *); void tc5165buf_soft(void *); void tc5165buf_ifsetup(struct tc5165buf_chip *); int tc5165buf_input_establish(void *, struct hpckbd_if *); struct tc5165buf_chip tc5165buf_chip; CFATTACH_DECL(tc5165buf, sizeof(struct tc5165buf_softc), tc5165buf_match, tc5165buf_attach, NULL, NULL); int tc5165buf_match(struct device *parent, struct cfdata *cf, void *aux) { return (1); } void tc5165buf_attach(struct device *parent, struct device *self, void *aux) { struct cs_attach_args *ca = aux; struct tc5165buf_softc *sc = (void*)self; struct hpckbd_attach_args haa; printf(": "); sc->sc_tc = ca->ca_tc; sc->sc_chip = &tc5165buf_chip; callout_init(&sc->sc_chip->scc_soft_ch, 0); 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); haa.haa_ic = &sc->sc_chip->scc_if; config_found(self, &haa, hpckbd_print); } void tc5165buf_ifsetup(struct tc5165buf_chip *scc) { scc->scc_if.hii_ctx = scc; scc->scc_if.hii_establish = tc5165buf_input_establish; scc->scc_if.hii_poll = tc5165buf_poll; } int tc5165buf_cnattach(paddr_t addr) { struct tc5165buf_chip *scc = &tc5165buf_chip; scc->scc_csh = MIPS_PHYS_TO_KSEG1(addr); tc5165buf_ifsetup(scc); hpckbd_cnattach(&scc->scc_if); return (0); } int tc5165buf_input_establish(void *ic, struct hpckbd_if *kbdif) { struct tc5165buf_chip *scc = ic; /* save hpckbd interface */ scc->scc_hpckbd = kbdif; scc->scc_enabled = 1; return (0); } int tc5165buf_intr(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(void *arg) { struct tc5165buf_chip *scc = arg; if (!scc->scc_enabled) return (POLL_CONT); tc5165buf_soft(arg); return (POLL_CONT); } void tc5165buf_soft(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; int s; hpckbd_input_hook(scc->scc_hpckbd); /* 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)); hpckbd_input(scc->scc_hpckbd, type, val); } } } } s = spltty(); scc->scc_queued = 0; splx(s); }