/* $NetBSD: vrkiu.c,v 1.39 2012/10/27 17:17:56 chs Exp $ */ /*- * Copyright (c) 1999 SASAKI Takesi All rights reserved. * Copyright (c) 1999, 2000, 2002 TAKEMRUA, Shin All rights reserved. * Copyright (c) 1999 PocketBSD Project. 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. 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 PocketBSD project * and its contributors. * 4. Neither the name of the project 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 REGENTS 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 REGENTS 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. * */ #include __KERNEL_RCSID(0, "$NetBSD: vrkiu.c,v 1.39 2012/10/27 17:17:56 chs Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "opt_wsdisplay_compat.h" #include "opt_pckbd_layout.h" #include #include #include #include #ifdef WSDISPLAY_COMPAT_RAWKBD #include #endif #define VRKIUDEBUG #ifdef VRKIUDEBUG int vrkiu_debug = 0; #define DPRINTF(arg) if (vrkiu_debug) printf arg; #else #define DPRINTF(arg) #endif static int vrkiumatch(device_t, cfdata_t, void *); static void vrkiuattach(device_t, device_t, void *); int vrkiu_intr(void *); static int vrkiu_init(struct vrkiu_chip *, bus_space_tag_t, bus_space_handle_t); static void vrkiu_write(struct vrkiu_chip *, int, unsigned short); static unsigned short vrkiu_read(struct vrkiu_chip *, int); static int vrkiu_is_console(bus_space_tag_t, bus_space_handle_t); static void vrkiu_scan(struct vrkiu_chip *); static int countbits(int); static void eliminate_phantom_keys(struct vrkiu_chip *, unsigned short *); static int vrkiu_poll(void*); static int vrkiu_input_establish(void*, struct hpckbd_if*); CFATTACH_DECL_NEW(vrkiu, sizeof(struct vrkiu_softc), vrkiumatch, vrkiuattach, NULL, NULL); struct vrkiu_chip *vrkiu_consdata = NULL; static inline void vrkiu_write(struct vrkiu_chip *chip, int port, unsigned short val) { bus_space_write_2(chip->kc_iot, chip->kc_ioh, port, val); } static inline unsigned short vrkiu_read(struct vrkiu_chip *chip, int port) { return (bus_space_read_2(chip->kc_iot, chip->kc_ioh, port)); } static inline int vrkiu_is_console(bus_space_tag_t iot, bus_space_handle_t ioh) { if (vrkiu_consdata && vrkiu_consdata->kc_iot == iot && vrkiu_consdata->kc_ioh == ioh) { return (1); } else { return (0); } } static int vrkiumatch(device_t parent, cfdata_t cf, void *aux) { return (1); } static void vrkiuattach(device_t parent, device_t self, void *aux) { struct vrkiu_softc *sc = device_private(self); struct vrip_attach_args *va = aux; struct hpckbd_attach_args haa; int isconsole, res; bus_space_tag_t iot = va->va_iot; bus_space_handle_t ioh; if (va->va_parent_ioh != 0) res = bus_space_subregion(iot, va->va_parent_ioh, va->va_addr, va->va_size, &ioh); else res = bus_space_map(iot, va->va_addr, 1, 0, &ioh); if (res != 0) { printf(": can't map bus space\n"); return; } isconsole = vrkiu_is_console(iot, ioh); if (isconsole) { sc->sc_chip = vrkiu_consdata; } else { sc->sc_chip = &sc->sc_chip_body; vrkiu_init(sc->sc_chip, iot, ioh); } sc->sc_chip->kc_sc = sc; if (!(sc->sc_handler = vrip_intr_establish(va->va_vc, va->va_unit, 0, IPL_TTY, vrkiu_intr, sc))) { printf (": can't map interrupt line.\n"); return; } /* Level2 register setting */ vrip_intr_setmask2(va->va_vc, sc->sc_handler, KIUINT_KDATRDY, 1); printf("\n"); /* attach hpckbd */ haa.haa_ic = &sc->sc_chip->kc_if; config_found(self, &haa, hpckbd_print); } /* * initialize device */ static int vrkiu_init(struct vrkiu_chip *chip, bus_space_tag_t iot, bus_space_handle_t ioh) { memset(chip, 0, sizeof(struct vrkiu_chip)); chip->kc_iot = iot; chip->kc_ioh = ioh; chip->kc_enabled = 0; chip->kc_if.hii_ctx = chip; chip->kc_if.hii_establish = vrkiu_input_establish; chip->kc_if.hii_poll = vrkiu_poll; /* set KIU */ vrkiu_write(chip, KIURST, 1); /* reset */ vrkiu_write(chip, KIUSCANLINE, 0); /* 96keys */ vrkiu_write(chip, KIUWKS, 0x18a4); /* XXX: scan timing! */ vrkiu_write(chip, KIUWKI, 450); vrkiu_write(chip, KIUSCANREP, 0x8023); /* KEYEN | STPREP = 2 | ATSTP | ATSCAN */ return (0); } int vrkiu_intr(void *arg) { struct vrkiu_softc *sc = arg; /* When key scan finisshed, this entry is called. */ #if 0 DPRINTF(("vrkiu_intr: intr=%x scan=%x\n", vrkiu_read(sc->sc_chip, KIUINT) & 7, vrkiu_read(sc->sc_chip, KIUSCANS) & KIUSCANS_SSTAT_MASK)); #endif /* * First, we must clear the interrupt register because * vrkiu_scan() may takes long time if a bitmap screen * scrolls up and it makes us to miss some key release * event. */ vrkiu_write(sc->sc_chip, KIUINT, 0x7); /* Clear all interrupt */ #if 1 /* just return if kiu is scanning keyboard. */ if ((vrkiu_read(sc->sc_chip, KIUSCANS) & KIUSCANS_SSTAT_MASK) == KIUSCANS_SSTAT_SCANNING) return (0); #endif vrkiu_scan(sc->sc_chip); return (0); } static int countbits(int d) { int i, n; for (i = 0, n = 0; i < NBBY; i++) if (d & (1 << i)) n++; return (n); } static void eliminate_phantom_keys(struct vrkiu_chip *chip, unsigned short *scandata) { unsigned char inkey[KIU_NSCANLINE], *prevkey, *reskey; int i, j; #ifdef VRKIUDEBUG int modified = 0; static int prevmod = 0; #endif reskey = (unsigned char *)scandata; for (i = 0; i < KIU_NSCANLINE; i++) inkey[i] = reskey[i]; prevkey = (unsigned char *)chip->kc_scandata; for (i = 0; i < KIU_NSCANLINE; i++) { if (countbits(inkey[i]) > 1) { for (j = 0; j < KIU_NSCANLINE; j++) { if (i != j && (inkey[i] & inkey[j])) { #ifdef VRKIUDEBUG modified = 1; if (!prevmod) { DPRINTF(("vrkiu_scan: %x:%02x->%02x", i, inkey[i], prevkey[i])); DPRINTF((" %x:%02x->%02x\n", j, inkey[j], prevkey[j])); } #endif reskey[i] = prevkey[i]; reskey[j] = prevkey[j]; } } } } #ifdef VRKIUDEBUG prevmod = modified; #endif } static void vrkiu_scan(struct vrkiu_chip* chip) { int i, j, modified, mask; unsigned short scandata[KIU_NSCANLINE/2]; if (!chip->kc_enabled) return; for (i = 0; i < KIU_NSCANLINE / 2; i++) { scandata[i] = vrkiu_read(chip, KIUDATP + i * 2); } eliminate_phantom_keys(chip, scandata); for (i = 0; i < KIU_NSCANLINE / 2; i++) { modified = scandata[i] ^ chip->kc_scandata[i]; chip->kc_scandata[i] = scandata[i]; mask = 1; for (j = 0; j < 16; j++, mask <<= 1) { /* * Simultaneous keypresses are resolved by registering * the one with the lowest bit index first. */ if (modified & mask) { int key = i * 16 + j; DPRINTF(("vrkiu_scan: %s(%d,%d)\n", (scandata[i] & mask) ? "down" : "up", i, j)); hpckbd_input(chip->kc_hpckbd, (scandata[i] & mask), key); } } } } /* called from bicons.c */ int vrkiu_getc(void) { static int flag = 1; /* * XXX, currently */ if (flag) { flag = 0; printf("%s(%d): vrkiu_getc() is not implemented\n", __FILE__, __LINE__); } return (0); } /* * hpckbd interface routines */ int vrkiu_input_establish(void *ic, struct hpckbd_if *kbdif) { struct vrkiu_chip *kc = ic; /* save hpckbd interface */ kc->kc_hpckbd = kbdif; kc->kc_enabled = 1; return (0); } int vrkiu_poll(void *ic) { struct vrkiu_chip *kc = ic; #if 1 /* wait until kiu completes keyboard scan. */ while ((vrkiu_read(kc, KIUSCANS) & KIUSCANS_SSTAT_MASK) == KIUSCANS_SSTAT_SCANNING) /* wait until kiu completes keyboard scan */; #endif vrkiu_scan(kc); return (0); } /* * console support routine */ int vrkiu_cnattach(bus_space_tag_t iot, int iobase) { static struct vrkiu_chip vrkiu_consdata_body; bus_space_handle_t ioh; if (vrkiu_consdata) { panic("vrkiu is already attached as the console"); } if (bus_space_map(iot, iobase, 1, 0, &ioh)) { printf("%s(%d): can't map bus space\n", __FILE__, __LINE__); return (-1); } if (vrkiu_init(&vrkiu_consdata_body, iot, ioh) != 0) { DPRINTF(("%s(%d): vrkiu_init() failed\n", __FILE__, __LINE__)); return (-1); } vrkiu_consdata = &vrkiu_consdata_body; hpckbd_cnattach(&vrkiu_consdata_body.kc_if); return (0); }