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pfckbd.c revision 1.4 
      1 /*	$NetBSD: pfckbd.c,v 1.4 2002/01/27 05:15:35 uch Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include "debug_hpcsh.h"
     40 
     41 #include <sys/param.h>
     42 #include <sys/systm.h>
     43 #include <sys/device.h>
     44 #include <sys/callout.h>
     45 
     46 #include <machine/bus.h>
     47 #include <machine/platid.h>
     48 #include <machine/platid_mask.h>
     49 
     50 #include <dev/hpc/hpckbdvar.h>
     51 
     52 #include <sh3/pfcreg.h>
     53 
     54 #include <hpcsh/dev/pfckbdvar.h>
     55 
     56 #ifdef	PFCKBD_DEBUG
     57 #define DPRINTF_ENABLE
     58 #define DPRINTF_DEBUG	pfckbd_debug
     59 #endif
     60 #include <hpcsh/hpcsh/debug.h>
     61 
     62 STATIC int pfckbd_match(struct device *, struct cfdata *, void *);
     63 STATIC void pfckbd_attach(struct device *, struct device *, void *);
     64 STATIC void (*pfckbd_callout_lookup(void))(void *);
     65 STATIC void pfckbd_callout_unknown(void *);
     66 STATIC void pfckbd_callout_hp(void *);
     67 STATIC void pfckbd_callout_hitachi(void *);
     68 
     69 STATIC struct pfckbd_core {
     70 	int pc_attached;
     71 	int pc_enabled;
     72 	struct callout pc_soft_ch;
     73 	struct hpckbd_ic_if pc_if;
     74 	struct hpckbd_if *pc_hpckbd;
     75 	u_int16_t pc_column[8];
     76 	void (*pc_callout)(void *);
     77 } pfckbd_core;
     78 
     79 /* callout function table. this function is platfrom specific. */
     80 STATIC const struct {
     81 	platid_mask_t *platform;
     82 	void (*func)(void *);
     83 } pfckbd_calloutfunc_table[] = {
     84 	{ &platid_mask_MACH_HP		, pfckbd_callout_hp },
     85 	{ &platid_mask_MACH_HITACHI	, pfckbd_callout_hitachi }
     86 };
     87 
     88 struct cfattach pfckbd_ca = {
     89 	sizeof(struct device), pfckbd_match, pfckbd_attach
     90 };
     91 
     92 STATIC int pfckbd_poll(void *);
     93 STATIC void pfckbd_ifsetup(struct pfckbd_core *);
     94 STATIC int pfckbd_input_establish(void *, struct hpckbd_if *);
     95 STATIC void pfckbd_input(struct hpckbd_if *, u_int16_t *, u_int16_t, int);
     96 
     97 /*
     98  * matrix scan keyboard connected to SH3 PFC module.
     99  * currently, HP Jornada 680/690, HITACHI PERSONA HPW-50PAD only.
    100  */
    101 void
    102 pfckbd_cnattach()
    103 {
    104 	struct pfckbd_core *pc = &pfckbd_core;
    105 
    106 	/* initialize interface */
    107 	pfckbd_ifsetup(pc);
    108 
    109 	/* attach console */
    110 	hpckbd_cnattach(&pc->pc_if);
    111 }
    112 
    113 int
    114 pfckbd_match(struct device *parent, struct cfdata *cf, void *aux)
    115 {
    116 
    117 	return (!pfckbd_core.pc_attached);
    118 }
    119 
    120 void
    121 pfckbd_attach(struct device *parent, struct device *self, void *aux)
    122 {
    123 	struct hpckbd_attach_args haa;
    124 
    125 	printf("\n");
    126 
    127 	/* pfckbd is singleton. no more attach */
    128 	pfckbd_core.pc_attached = 1;
    129 	pfckbd_ifsetup(&pfckbd_core);
    130 
    131 	/* attach hpckbd */
    132 	haa.haa_ic = &pfckbd_core.pc_if; /* tell the hpckbd to my interface */
    133 	config_found(self, &haa, hpckbd_print);
    134 
    135 	/* install callout handler */
    136 	callout_init(&pfckbd_core.pc_soft_ch);
    137 	callout_reset(&pfckbd_core.pc_soft_ch, 1, pfckbd_core.pc_callout,
    138 	    &pfckbd_core);
    139 }
    140 
    141 int
    142 pfckbd_input_establish(void *ic, struct hpckbd_if *kbdif)
    143 {
    144 	struct pfckbd_core *pc = ic;
    145 
    146 	/* save hpckbd interface */
    147 	pc->pc_hpckbd = kbdif;
    148 	/* ok to transact hpckbd */
    149 	pc->pc_enabled = 1;
    150 
    151 	return 0;
    152 }
    153 
    154 int
    155 pfckbd_poll(void *arg)
    156 {
    157 	struct pfckbd_core *pc = arg;
    158 
    159 	if (pc->pc_enabled)
    160 		(*pc->pc_callout)(arg);
    161 
    162 	return 0;
    163 }
    164 
    165 void
    166 pfckbd_ifsetup(struct pfckbd_core *pc)
    167 {
    168 	int i;
    169 
    170 	pc->pc_if.hii_ctx = pc;
    171 	pc->pc_if.hii_establish	= pfckbd_input_establish;
    172 	pc->pc_if.hii_poll = pfckbd_poll;
    173 	for (i = 0; i < 8; i++)
    174 		pc->pc_column[i] = 0xdfff;
    175 
    176 	/* select PFC access method */
    177 	pc->pc_callout = pfckbd_callout_lookup();
    178 }
    179 
    180 void
    181 pfckbd_input(struct hpckbd_if *hpckbd, u_int16_t *buf, u_int16_t data,
    182     int column)
    183 {
    184 	int row, type, val;
    185 	u_int16_t edge, mask;
    186 
    187 	if ((edge = (data ^ buf[column]))) {
    188 		buf[column] = data;
    189 
    190 		for (row = 0, mask = 1; row < 16; row++, mask <<= 1) {
    191 			if (mask & edge) {
    192 				type = mask & data ? 0 : 1;
    193 				val = row * 8 + column;
    194 				DPRINTF("(%2d, %2d) %d \n",
    195 				    row, column, type);
    196 				hpckbd_input(hpckbd, type, val);
    197 			}
    198 		}
    199 	}
    200 }
    201 
    202 /*
    203  * Platform dependent routines.
    204  */
    205 
    206 /* Look up appropriate callback handler */
    207 void (*pfckbd_callout_lookup())(void *)
    208 {
    209 	int i, n = sizeof(pfckbd_calloutfunc_table) /
    210 	    sizeof(pfckbd_calloutfunc_table[0]);
    211 
    212 	for (i = 0; i < n; i++)
    213 		if (platid_match(&platid,
    214 		    pfckbd_calloutfunc_table[i].platform))
    215 			return (pfckbd_calloutfunc_table[i].func);
    216 
    217 	return (pfckbd_callout_unknown);
    218 }
    219 
    220 /* Placeholder for unknown platform */
    221 void
    222 pfckbd_callout_unknown(void *arg)
    223 {
    224 
    225 	printf("%s: unknown keyboard switch\n", __FUNCTION__);
    226 }
    227 
    228 /* HP Jornada680/690, HP620LX */
    229 void
    230 pfckbd_callout_hp(void *arg)
    231 {
    232 	static const struct {
    233 		u_int8_t d, e;
    234 	} scan[] = {
    235 		{ 0xfd, 0xff },
    236 		{ 0xdf, 0xff },
    237 		{ 0xff, 0xfd },
    238 		{ 0xff, 0xbf },
    239 		{ 0xff, 0x7f },
    240 		{ 0xff, 0xf7 },
    241 		{ 0xff, 0xfe },
    242 		{ 0x7f, 0xff },
    243 	};
    244 	struct pfckbd_core *pc = arg;
    245 	int column;
    246 	u_int16_t data;
    247 
    248 	if (!pc->pc_enabled)
    249 		goto reinstall;
    250 
    251 	for (column = 0; column < 8; column++) {
    252 		SHREG_PDDR = scan[column].d;
    253 		SHREG_PEDR = scan[column].e;
    254 		delay(50);
    255 		data = SHREG_PFDR | (SHREG_PCDR << 8);
    256 
    257 		pfckbd_input(pc->pc_hpckbd, pc->pc_column, data, column);
    258 	}
    259 
    260 	SHREG_PDDR = 0xff;
    261 	SHREG_PEDR = 0xff;
    262 	data = SHREG_PGDR | (SHREG_PHDR << 8);
    263 
    264  reinstall:
    265 	callout_reset(&pc->pc_soft_ch, 1, pfckbd_callout_hp, pc);
    266 }
    267 
    268 /* HITACH PERSONA (HPW-50PAD) */
    269 void
    270 pfckbd_callout_hitachi(void *arg)
    271 {
    272 	static const struct {
    273 		u_int8_t d, e;
    274 	} scan[] = {
    275 		{ 0xf5, 0xff },
    276 		{ 0xd7, 0xff },
    277 		{ 0xf7, 0xfd },
    278 		{ 0xf7, 0xbf },
    279 		{ 0xf7, 0x7f },
    280 		{ 0xf7, 0xf7 },
    281 		{ 0xf7, 0xfe },
    282 		{ 0x77, 0xff },
    283 	};
    284 	struct pfckbd_core *pc = arg;
    285 	u_int16_t data;
    286 	int column;
    287 
    288 	if (!pc->pc_enabled)
    289 		goto reinstall;
    290 
    291 	for (column = 0; column < 8; column++) {
    292 		SHREG_PCDR = ~(1 << column);
    293 		delay(50);
    294 		data = ((SHREG_PFDR & 0xfe) | (SHREG_PCDR & 0x01)) << 8;
    295 		SHREG_PCDR = 0xff;
    296 		SHREG_PDDR = scan[column].d;
    297 		SHREG_PEDR = scan[column].e;
    298 		delay(50);
    299 		data |= (SHREG_PFDR & 0xfe) | (SHREG_PCDR & 0x01);
    300 		SHREG_PDDR = 0xf7;
    301 		SHREG_PEDR = 0xff;
    302 
    303 		pfckbd_input(pc->pc_hpckbd, pc->pc_column, data, column);
    304 	}
    305 
    306 	SHREG_PDDR = 0xf7;
    307 	SHREG_PEDR = 0xff;
    308 	data = SHREG_PGDR | (SHREG_PHDR << 8);
    309 
    310  reinstall:
    311 	callout_reset(&pc->pc_soft_ch, 1, pfckbd_callout_hitachi, pc);
    312 }
    313