449 lines
12 KiB
C
449 lines
12 KiB
C
/* $NetBSD: pfckbd.c,v 1.20 2006/02/23 01:43:47 uwe Exp $ */
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/*-
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* Copyright (c) 2001, 2002 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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* Matrix scan keyboard connected to SH7709, SH7709A PFC module.
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* currently, HP Jornada 680/690, HITACHI PERSONA HPW-50PAD only.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pfckbd.c,v 1.20 2006/02/23 01:43:47 uwe Exp $");
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#include "debug_hpcsh.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 <sys/callout.h>
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#include <machine/bus.h>
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#include <machine/platid.h>
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#include <machine/platid_mask.h>
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#include <dev/hpc/hpckbdvar.h>
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#include <sh3/pfcreg.h>
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#include <hpcsh/dev/pfckbdvar.h>
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#ifdef PFCKBD_DEBUG
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#define DPRINTF_ENABLE
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#define DPRINTF_DEBUG pfckbd_debug
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#endif
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#include <machine/debug.h>
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static struct pfckbd_core {
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int pc_attached;
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int pc_enabled;
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struct callout pc_soft_ch;
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struct hpckbd_ic_if pc_if;
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struct hpckbd_if *pc_hpckbd;
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uint16_t pc_column[8];
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void (*pc_callout)(void *);
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} pfckbd_core;
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static int pfckbd_match(struct device *, struct cfdata *, void *);
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static void pfckbd_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(pfckbd, sizeof(struct device),
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pfckbd_match, pfckbd_attach, NULL, NULL);
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static void pfckbd_ifsetup(struct pfckbd_core *);
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/* callbacks for hpckbd */
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static int pfckbd_input_establish(void *, struct hpckbd_if *);
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static int pfckbd_poll(void *);
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static void pfckbd_input(struct pfckbd_core *, int, uint16_t);
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static void (*pfckbd_callout_lookup(void))(void *);
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static void pfckbd_callout_unknown(void *);
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static void pfckbd_callout_hp(void *);
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static void pfckbd_callout_hitachi(void *);
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/* callout function table. this function is platfrom specific. */
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static const struct {
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platid_mask_t *platform;
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void (*func)(void *);
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} pfckbd_calloutfunc_table[] = {
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{ &platid_mask_MACH_HP , pfckbd_callout_hp },
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{ &platid_mask_MACH_HITACHI , pfckbd_callout_hitachi }
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};
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void
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pfckbd_cnattach()
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{
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struct pfckbd_core *pc = &pfckbd_core;
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if ((cpu_product != CPU_PRODUCT_7709)
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&& (cpu_product != CPU_PRODUCT_7709A))
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return;
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/* initialize interface */
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pfckbd_ifsetup(pc);
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/* attach descendants */
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hpckbd_cnattach(&pc->pc_if);
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}
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static int
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pfckbd_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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if ((cpu_product != CPU_PRODUCT_7709)
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&& (cpu_product != CPU_PRODUCT_7709A))
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return 0;
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return !pfckbd_core.pc_attached; /* attach only once */
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}
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static void
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pfckbd_attach(struct device *parent, struct device *self, void *aux)
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{
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struct hpckbd_attach_args haa;
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printf("\n");
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pfckbd_core.pc_attached = 1;
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pfckbd_ifsetup(&pfckbd_core);
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/* attach hpckbd */
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haa.haa_ic = &pfckbd_core.pc_if; /* tell hpckbd our interface */
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config_found(self, &haa, hpckbd_print);
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/* install callout handler */
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callout_init(&pfckbd_core.pc_soft_ch);
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callout_reset(&pfckbd_core.pc_soft_ch, 1,
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pfckbd_core.pc_callout, &pfckbd_core);
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}
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static void
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pfckbd_ifsetup(struct pfckbd_core *pc)
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{
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int i;
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pc->pc_if.hii_ctx = pc;
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pc->pc_if.hii_establish = pfckbd_input_establish;
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pc->pc_if.hii_poll = pfckbd_poll;
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for (i = 0; i < 8; i++)
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pc->pc_column[i] = 0xdfff;
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/* select PFC access method */
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pc->pc_callout = pfckbd_callout_lookup();
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}
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/*
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* Callback for hpckbd_initif
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*/
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static int
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pfckbd_input_establish(void *ic, struct hpckbd_if *kbdif)
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{
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struct pfckbd_core *pc = ic;
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pc->pc_hpckbd = kbdif; /* save hpckbd interface */
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pc->pc_enabled = 1; /* ok to talk to hpckbd */
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return 0;
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}
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/*
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* Callback for hpckbd_cngetc
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*/
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static int
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pfckbd_poll(void *ic)
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{
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struct pfckbd_core *pc = ic;
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if (pc->pc_enabled)
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(*pc->pc_callout)(pc);
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return 0;
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}
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/*
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* Called by platform specific scan routines to report key events to hpckbd
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*/
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static void
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pfckbd_input(struct pfckbd_core *pc, int column, uint16_t data)
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{
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int row, type, val;
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unsigned int edge, mask;
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edge = data ^ pc->pc_column[column];
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if (edge == 0)
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return; /* no changes in this column */
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pc->pc_column[column] = data;
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for (row = 0, mask = 1; row < 16; ++row, mask <<= 1) {
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if (mask & edge) {
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type = mask & data ? /* up */ 0 : /* down */ 1;
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DPRINTF("(%2d, %2d) %d \n", row, column, type);
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val = row * 8 + column;
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hpckbd_input(pc->pc_hpckbd, type, val);
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}
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}
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}
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/*
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* Platform dependent scan routines.
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*/
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/* Look up appropriate callback handler */
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static void
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(*pfckbd_callout_lookup())(void *)
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{
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int i, n;
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n = sizeof(pfckbd_calloutfunc_table)
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/ sizeof(pfckbd_calloutfunc_table[0]);
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for (i = 0; i < n; i++)
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if (platid_match(&platid,
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pfckbd_calloutfunc_table[i].platform))
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return pfckbd_calloutfunc_table[i].func;
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return pfckbd_callout_unknown;
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}
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/* Placeholder for unknown platform */
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static void
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pfckbd_callout_unknown(void *arg)
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{
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printf("%s: unknown keyboard switch\n", __func__);
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}
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/*
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* HP Jornada680/690, HP620LX
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*/
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static void
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pfckbd_callout_hp(void *arg)
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{
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#define PFCKBD_HP_PDCR_MASK 0xcc0c
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#define PFCKBD_HP_PECR_MASK 0xf0cf
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/*
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* Disable output on all lines but the n'th line in D.
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* Pull the n'th scan line in D low.
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*/
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#define PD(n) \
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{ (uint16_t)(PFCKBD_HP_PDCR_MASK & (~(1 << (2*(n)+1)))), \
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(uint16_t)(PFCKBD_HP_PECR_MASK & 0xffff), \
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(uint8_t)~(1 << (n)), \
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0xff }
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/* Ditto for E */
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#define PE(n) \
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{ (uint16_t)(PFCKBD_HP_PDCR_MASK & 0xffff), \
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(uint16_t)(PFCKBD_HP_PECR_MASK & (~(1 << (2*(n)+1)))), \
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0xff, \
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(uint8_t)~(1 << (n)) }
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static const struct {
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uint16_t dc, ec; uint8_t d, e;
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} scan[] = {
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PD(1), PD(5), PE(1), PE(6), PE(7), PE(3), PE(0), PD(7)
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};
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#undef PD
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#undef PE
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struct pfckbd_core *pc = arg;
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uint16_t dc, ec;
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int column;
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uint16_t data;
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if (!pc->pc_enabled)
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goto reinstall;
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/* bits in D/E control regs we do not touch (XXX: can they change?) */
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dc = _reg_read_2(SH7709_PDCR) & ~PFCKBD_HP_PDCR_MASK;
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ec = _reg_read_2(SH7709_PECR) & ~PFCKBD_HP_PECR_MASK;
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for (column = 0; column < 8; column++) {
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/* disable output to all lines except the one we scan */
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_reg_write_2(SH7709_PDCR, dc | scan[column].dc);
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_reg_write_2(SH7709_PECR, ec | scan[column].ec);
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delay(5);
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/* pull the scan line low */
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_reg_write_1(SH7709_PDDR, scan[column].d);
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_reg_write_1(SH7709_PEDR, scan[column].e);
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delay(50);
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/* read sense */
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data = _reg_read_1(SH7709_PFDR)
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| (_reg_read_1(SH7709_PCDR) << 8);
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pfckbd_input(pc, column, data);
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}
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/* scan no lines */
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_reg_write_1(SH7709_PDDR, 0xff);
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_reg_write_1(SH7709_PEDR, 0xff);
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/* enable all scan lines */
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_reg_write_2(SH7709_PDCR, dc | (0x5555 & PFCKBD_HP_PDCR_MASK));
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_reg_write_2(SH7709_PECR, ec | (0x5555 & PFCKBD_HP_PECR_MASK));
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#if 0
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/* (ignore) extra keys/events (recorder buttons, lid, cable &c) */
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data = _reg_read_1(SH7709_PGDR) | (_reg_read_1(SH7709_PHDR) << 8);
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#endif
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reinstall:
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callout_schedule(&pc->pc_soft_ch, 1);
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}
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/*
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* HITACH PERSONA (HPW-50PAD)
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*/
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static void
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pfckbd_callout_hitachi(void *arg)
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{
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#define PFCKBD_HITACHI_PCCR_MASK 0xfff3
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#define PFCKBD_HITACHI_PDCR_MASK 0x000c
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#define PFCKBD_HITACHI_PECR_MASK 0x30cf
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#define PFCKBD_HITACHI_PCDR_SCN_MASK 0xfd
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#define PFCKBD_HITACHI_PDDR_SCN_MASK 0xf7
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#define PFCKBD_HITACHI_PEDR_SCN_MASK 0xff
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#define PFCKBD_HITACHI_PCDR_SNS_MASK 0x01
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#define PFCKBD_HITACHI_PFDR_SNS_MASK 0xfe
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/*
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* Disable output on all lines but the n'th line in C.
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* Pull the n'th scan line in C low.
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*/
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#define PC(n) \
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{ (uint16_t)(PFCKBD_HITACHI_PCCR_MASK & (~(1 << (2*(n)+1)))), \
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(uint16_t)(PFCKBD_HITACHI_PDCR_MASK & 0xffff), \
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(uint16_t)(PFCKBD_HITACHI_PECR_MASK & 0xffff), \
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(uint8_t)(PFCKBD_HITACHI_PCDR_SCN_MASK & ~(1 << (n))), \
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PFCKBD_HITACHI_PDDR_SCN_MASK, \
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PFCKBD_HITACHI_PEDR_SCN_MASK }
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/* Ditto for D */
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#define PD(n) \
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{ (uint16_t)(PFCKBD_HITACHI_PCCR_MASK & 0xffff), \
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(uint16_t)(PFCKBD_HITACHI_PDCR_MASK & (~(1 << (2*(n)+1)))), \
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(uint16_t)(PFCKBD_HITACHI_PECR_MASK & 0xffff), \
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PFCKBD_HITACHI_PCDR_SCN_MASK, \
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(uint8_t)(PFCKBD_HITACHI_PDDR_SCN_MASK & ~(1 << (n))), \
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PFCKBD_HITACHI_PEDR_SCN_MASK }
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/* Ditto for E */
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#define PE(n) \
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{ (uint16_t)(PFCKBD_HITACHI_PCCR_MASK & 0xffff), \
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(uint16_t)(PFCKBD_HITACHI_PDCR_MASK & 0xffff), \
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(uint16_t)(PFCKBD_HITACHI_PECR_MASK & (~(1 << (2*(n)+1)))), \
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PFCKBD_HITACHI_PCDR_SCN_MASK, \
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PFCKBD_HITACHI_PDDR_SCN_MASK, \
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(uint8_t)(PFCKBD_HITACHI_PEDR_SCN_MASK & ~(1 << (n))) }
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static const struct {
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uint16_t cc, dc, ec; uint8_t c, d, e;
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} scan[] = {
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PE(6), PE(3), PE(1), PE(0), PC(7), PC(6), PC(5), PC(4),
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PC(3), PC(2), PD(1), PC(0)
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};
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#undef PC
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#undef PD
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#undef PE
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struct pfckbd_core *pc = arg;
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uint16_t cc, dc, ec;
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uint8_t data[2], cd, dd, ed;
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int i;
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if (!pc->pc_enabled)
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goto reinstall;
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/* bits in C/D/E control regs we do not touch (XXX: can they change?) */
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cc = _reg_read_2(SH7709_PCCR) & ~PFCKBD_HITACHI_PCCR_MASK;
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dc = _reg_read_2(SH7709_PDCR) & ~PFCKBD_HITACHI_PDCR_MASK;
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ec = _reg_read_2(SH7709_PECR) & ~PFCKBD_HITACHI_PECR_MASK;
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cd = _reg_read_1(SH7709_PCDR);
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dd = _reg_read_1(SH7709_PDDR);
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ed = _reg_read_1(SH7709_PEDR);
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for (i = 0; i < 12; i++) {
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/* disable output to all lines except the one we scan */
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_reg_write_2(SH7709_PCCR, cc | scan[i].cc);
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_reg_write_2(SH7709_PDCR, dc | scan[i].dc);
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_reg_write_2(SH7709_PECR, ec | scan[i].ec);
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delay(5);
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/* pull the scan line low */
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_reg_write_1(SH7709_PCDR, scan[i].c);
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_reg_write_1(SH7709_PDDR, scan[i].d);
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_reg_write_1(SH7709_PEDR, scan[i].e);
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delay(50);
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/* read sense */
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data[i & 0x1] =
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(_reg_read_1(SH7709_PCDR) & PFCKBD_HITACHI_PCDR_SNS_MASK)
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| (_reg_read_1(SH7709_PFDR) & PFCKBD_HITACHI_PFDR_SNS_MASK);
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if (i & 0x1)
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pfckbd_input(pc, (i >> 1), (data[0] | (data[1] << 8)));
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}
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/* scan no lines */
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_reg_write_1(SH7709_PCDR, cd);
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_reg_write_1(SH7709_PDDR, dd);
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_reg_write_1(SH7709_PEDR, ed);
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/* enable all scan lines */
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_reg_write_2(SH7709_PCCR, cc | (0x5555 & PFCKBD_HITACHI_PCCR_MASK));
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_reg_write_2(SH7709_PDCR, dc | (0x5555 & PFCKBD_HITACHI_PDCR_MASK));
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_reg_write_2(SH7709_PECR, ec | (0x5555 & PFCKBD_HITACHI_PECR_MASK));
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reinstall:
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callout_schedule(&pc->pc_soft_ch, 1);
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}
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