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pfckbd.c revision 1.2.6.4 
      1 /*	$NetBSD: pfckbd.c,v 1.2.6.4 2002/10/10 18:33:04 jdolecek 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 <machine/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 CFATTACH_DECL(pfckbd, sizeof(struct device),
     89     pfckbd_match, pfckbd_attach, NULL, NULL);
     90 
     91 STATIC int pfckbd_poll(void *);
     92 STATIC void pfckbd_ifsetup(struct pfckbd_core *);
     93 STATIC int pfckbd_input_establish(void *, struct hpckbd_if *);
     94 STATIC void pfckbd_input(struct hpckbd_if *, u_int16_t *, u_int16_t, int);
     95 
     96 /*
     97  * Matrix scan keyboard connected to SH7709, SH7709A PFC module.
     98  * currently, HP Jornada 680/690, HITACHI PERSONA HPW-50PAD only.
     99  */
    100 void
    101 pfckbd_cnattach()
    102 {
    103 	struct pfckbd_core *pc = &pfckbd_core;
    104 
    105 	if ((cpu_product != CPU_PRODUCT_7709) &&
    106 	    (cpu_product != CPU_PRODUCT_7709A))
    107 		return;
    108 
    109 	/* initialize interface */
    110 	pfckbd_ifsetup(pc);
    111 
    112 	/* attach console */
    113 	hpckbd_cnattach(&pc->pc_if);
    114 }
    115 
    116 int
    117 pfckbd_match(struct device *parent, struct cfdata *cf, void *aux)
    118 {
    119 
    120 	if ((cpu_product != CPU_PRODUCT_7709) &&
    121 	    (cpu_product != CPU_PRODUCT_7709A))
    122 		return (0);
    123 
    124 	return (!pfckbd_core.pc_attached);
    125 }
    126 
    127 void
    128 pfckbd_attach(struct device *parent, struct device *self, void *aux)
    129 {
    130 	struct hpckbd_attach_args haa;
    131 
    132 	printf("\n");
    133 
    134 	/* pfckbd is singleton. no more attach */
    135 	pfckbd_core.pc_attached = 1;
    136 	pfckbd_ifsetup(&pfckbd_core);
    137 
    138 	/* attach hpckbd */
    139 	haa.haa_ic = &pfckbd_core.pc_if; /* tell the hpckbd to my interface */
    140 	config_found(self, &haa, hpckbd_print);
    141 
    142 	/* install callout handler */
    143 	callout_init(&pfckbd_core.pc_soft_ch);
    144 	callout_reset(&pfckbd_core.pc_soft_ch, 1, pfckbd_core.pc_callout,
    145 	    &pfckbd_core);
    146 }
    147 
    148 int
    149 pfckbd_input_establish(void *ic, struct hpckbd_if *kbdif)
    150 {
    151 	struct pfckbd_core *pc = ic;
    152 
    153 	/* save hpckbd interface */
    154 	pc->pc_hpckbd = kbdif;
    155 	/* ok to transact hpckbd */
    156 	pc->pc_enabled = 1;
    157 
    158 	return 0;
    159 }
    160 
    161 int
    162 pfckbd_poll(void *arg)
    163 {
    164 	struct pfckbd_core *pc = arg;
    165 
    166 	if (pc->pc_enabled)
    167 		(*pc->pc_callout)(arg);
    168 
    169 	return 0;
    170 }
    171 
    172 void
    173 pfckbd_ifsetup(struct pfckbd_core *pc)
    174 {
    175 	int i;
    176 
    177 	pc->pc_if.hii_ctx = pc;
    178 	pc->pc_if.hii_establish	= pfckbd_input_establish;
    179 	pc->pc_if.hii_poll = pfckbd_poll;
    180 	for (i = 0; i < 8; i++)
    181 		pc->pc_column[i] = 0xdfff;
    182 
    183 	/* select PFC access method */
    184 	pc->pc_callout = pfckbd_callout_lookup();
    185 }
    186 
    187 void
    188 pfckbd_input(struct hpckbd_if *hpckbd, u_int16_t *buf, u_int16_t data,
    189     int column)
    190 {
    191 	int row, type, val;
    192 	u_int16_t edge, mask;
    193 
    194 	if ((edge = (data ^ buf[column]))) {
    195 		buf[column] = data;
    196 
    197 		for (row = 0, mask = 1; row < 16; row++, mask <<= 1) {
    198 			if (mask & edge) {
    199 				type = mask & data ? 0 : 1;
    200 				val = row * 8 + column;
    201 				DPRINTF("(%2d, %2d) %d \n",
    202 				    row, column, type);
    203 				hpckbd_input(hpckbd, type, val);
    204 			}
    205 		}
    206 	}
    207 }
    208 
    209 /*
    210  * Platform dependent routines.
    211  */
    212 
    213 /* Look up appropriate callback handler */
    214 void (*pfckbd_callout_lookup())(void *)
    215 {
    216 	int i, n = sizeof(pfckbd_calloutfunc_table) /
    217 	    sizeof(pfckbd_calloutfunc_table[0]);
    218 
    219 	for (i = 0; i < n; i++)
    220 		if (platid_match(&platid,
    221 		    pfckbd_calloutfunc_table[i].platform))
    222 			return (pfckbd_calloutfunc_table[i].func);
    223 
    224 	return (pfckbd_callout_unknown);
    225 }
    226 
    227 /* Placeholder for unknown platform */
    228 void
    229 pfckbd_callout_unknown(void *arg)
    230 {
    231 
    232 	printf("%s: unknown keyboard switch\n", __FUNCTION__);
    233 }
    234 
    235 /* HP Jornada680/690, HP620LX */
    236 void
    237 pfckbd_callout_hp(void *arg)
    238 {
    239 	static const struct {
    240 		u_int8_t d, e;
    241 	} scan[] = {
    242 		{ 0xfd, 0xff },
    243 		{ 0xdf, 0xff },
    244 		{ 0xff, 0xfd },
    245 		{ 0xff, 0xbf },
    246 		{ 0xff, 0x7f },
    247 		{ 0xff, 0xf7 },
    248 		{ 0xff, 0xfe },
    249 		{ 0x7f, 0xff },
    250 	};
    251 	struct pfckbd_core *pc = arg;
    252 	int column;
    253 	u_int16_t data;
    254 
    255 	if (!pc->pc_enabled)
    256 		goto reinstall;
    257 
    258 	for (column = 0; column < 8; column++) {
    259 		_reg_write_1(SH7709_PDDR, scan[column].d);
    260 		_reg_write_1(SH7709_PEDR, scan[column].e);
    261 		delay(50);
    262 		data = _reg_read_1(SH7709_PFDR) |
    263 		    (_reg_read_1(SH7709_PCDR) << 8);
    264 
    265 		pfckbd_input(pc->pc_hpckbd, pc->pc_column, data, column);
    266 	}
    267 
    268 	_reg_write_1(SH7709_PDDR, 0xff);
    269 	_reg_write_1(SH7709_PEDR, 0xff);
    270 	data = _reg_read_1(SH7709_PGDR) | (_reg_read_1(SH7709_PHDR) << 8);
    271 
    272  reinstall:
    273 	callout_reset(&pc->pc_soft_ch, 1, pfckbd_callout_hp, pc);
    274 }
    275 
    276 /* HITACH PERSONA (HPW-50PAD) */
    277 void
    278 pfckbd_callout_hitachi(void *arg)
    279 {
    280 	static const struct {
    281 		u_int8_t d, e;
    282 	} scan[] = {
    283 		{ 0xf5, 0xff },
    284 		{ 0xd7, 0xff },
    285 		{ 0xf7, 0xfd },
    286 		{ 0xf7, 0xbf },
    287 		{ 0xf7, 0x7f },
    288 		{ 0xf7, 0xf7 },
    289 		{ 0xf7, 0xfe },
    290 		{ 0x77, 0xff },
    291 	};
    292 	struct pfckbd_core *pc = arg;
    293 	u_int16_t data;
    294 	int column;
    295 
    296 	if (!pc->pc_enabled)
    297 		goto reinstall;
    298 
    299 	for (column = 0; column < 8; column++) {
    300 		_reg_write_1(SH7709_PCDR, ~(1 << column));
    301 		delay(50);
    302 		data = ((_reg_read_1(SH7709_PFDR) & 0xfe) |
    303 		    (_reg_read_1(SH7709_PCDR) & 0x01)) << 8;
    304 		_reg_write_1(SH7709_PCDR, 0xff);
    305 		_reg_write_1(SH7709_PDDR, scan[column].d);
    306 		_reg_write_1(SH7709_PEDR, scan[column].e);
    307 		delay(50);
    308 		data |= (_reg_read_1(SH7709_PFDR) & 0xfe) |
    309 		    (_reg_read_1(SH7709_PCDR) & 0x01);
    310 		_reg_write_1(SH7709_PDDR, 0xf7);
    311 		_reg_write_1(SH7709_PEDR, 0xff);
    312 
    313 		pfckbd_input(pc->pc_hpckbd, pc->pc_column, data, column);
    314 	}
    315 
    316 	_reg_write_1(SH7709_PDDR, 0xf7);
    317 	_reg_write_1(SH7709_PEDR, 0xff);
    318 	data = _reg_read_1(SH7709_PGDR) | (_reg_read_1(SH7709_PHDR) << 8);
    319 
    320  reinstall:
    321 	callout_reset(&pc->pc_soft_ch, 1, pfckbd_callout_hitachi, pc);
    322 }
    323