1 /* $NetBSD: epockbd.c,v 1.5 2021/08/07 16:18:48 thorpej Exp $ */
2 /*
3 * Copyright (c) 2013 KIYOHARA Takashi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: epockbd.c,v 1.5 2021/08/07 16:18:48 thorpej Exp $");
29
30 #include <sys/param.h>
31 #include <sys/bus.h>
32 #include <sys/callout.h>
33 #include <sys/device.h>
34 #include <sys/errno.h>
35 #include <sys/kernel.h>
36
37 #include <dev/wscons/wsconsio.h>
38 #include <dev/wscons/wskbdvar.h>
39 #include <dev/wscons/wsksymdef.h>
40 #include <dev/wscons/wsksymvar.h>
41
42 #include <epoc32/dev/epockbdvar.h>
43 #include <epoc32/dev/epockbdmap.h>
44
45 #define EPOCKBD_COLUMN0 8
46
47 #define EPOCKBD_SCAN_READ(sc) \
48 bus_space_read_1((sc)->sc_scant, (sc)->sc_scanh, 0)
49 #define EPOCKBD_SCAN_WRITE(sc, cmd) \
50 bus_space_write_1((sc)->sc_scant, (sc)->sc_scanh, 0, (cmd))
51 #define EPOCKBD_DATA_READ(sc) \
52 bus_space_read_1((sc)->sc_datat, (sc)->sc_datah, 0)
53
54 #define EPOC2WS_KBD_DATA(r, c) (((c) << 3) + (31 - __builtin_clz(r)) + 1)
55
56 static int epockbd_enable(void *, int);
57 static void epockbd_set_leds(void *, int);
58 static int epockbd_ioctl(void *, u_long, void *, int, struct lwp *);
59
60 static void epockbd_poll(void *);
61
62 static void epockbd_cngetc(void *, u_int *, int *);
63 static void epockbd_cnpollc(void *, int);
64
65 static struct wskbd_consops epockbd_consops = {
66 epockbd_cngetc,
67 epockbd_cnpollc,
68 NULL
69 };
70
71 static struct wskbd_accessops epockbd_accessops = {
72 epockbd_enable,
73 epockbd_set_leds,
74 epockbd_ioctl,
75 };
76
77 static struct wskbd_mapdata epockbd_mapdata = {
78 epockbd_keydesctab,
79 KB_UK,
80 };
81
82 static int is_console;
83
84 void
epockbd_attach(struct epockbd_softc * sc)85 epockbd_attach(struct epockbd_softc *sc)
86 {
87 struct wskbddev_attach_args aa;
88
89 aprint_normal("\n");
90 aprint_naive("\n");
91
92 if (is_console)
93 wskbd_cnattach(&epockbd_consops, sc, &epockbd_mapdata);
94
95 callout_init(&sc->sc_c, 0);
96 callout_reset(&sc->sc_c, hz, epockbd_poll, sc);
97 sc->sc_flags |= EPOCKBD_FLAG_ENABLE;
98
99 aa.console = is_console;
100 aa.keymap = &epockbd_mapdata;
101 aa.accessops = &epockbd_accessops;
102 aa.accesscookie = sc;
103 sc->sc_wskbddev = config_found(sc->sc_dev, &aa, wskbddevprint,
104 CFARGS_NONE);
105 }
106
107 /*
108 * wskbd(9) functions
109 */
110
111 static int
epockbd_enable(void * v,int on)112 epockbd_enable(void *v, int on)
113 {
114 struct epockbd_softc *sc = v;
115
116 if (on) {
117 sc->sc_flags |= EPOCKBD_FLAG_ENABLE;
118 callout_schedule(&sc->sc_c, hz / 20);
119 } else {
120 sc->sc_flags &= ~EPOCKBD_FLAG_ENABLE;
121 callout_stop(&sc->sc_c);
122 }
123 return 0;
124 }
125
126 static void
epockbd_set_leds(void * v,int on)127 epockbd_set_leds(void *v, int on)
128 {
129 /* Nothing */
130 }
131
132 static int
epockbd_ioctl(void * v,u_long cmd,void * data,int flag,struct lwp * l)133 epockbd_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
134 {
135 #ifdef WSDISPLAY_COMPAT_RAWKBD
136 struct epockbd_softc *sc = v;
137 #endif
138
139 switch (cmd) {
140 case WSKBDIO_GTYPE:
141 *(int *)data = WSKBD_TYPE_EPOC;
142 return 0;
143
144 case WSKBDIO_SETLEDS:
145 return 0;
146
147 case WSKBDIO_GETLEDS:
148 *(int *)data = 0;
149 return 0;
150
151 #ifdef WSDISPLAY_COMPAT_RAWKBD
152 case WSKBDIO_SETMODE:
153 *(int *)data = WSKBD_RAW;
154 sc->sc_flags |= EPOCKBD_FLAG_RAW;
155
156 /* Not yet...: return 0; */
157 #endif
158 }
159 return EPASSTHROUGH;
160 }
161
162 static void
epockbd_poll(void * v)163 epockbd_poll(void *v)
164 {
165 struct epockbd_softc *sc = v;
166 u_int type;
167 int data;
168
169 epockbd_cngetc(v, &type, &data);
170 if (data != 0)
171 wskbd_input(sc->sc_wskbddev, type, data);
172
173 callout_schedule(&sc->sc_c, hz / 20);
174 }
175
176 void
epockbd_cnattach(void)177 epockbd_cnattach(void)
178 {
179
180 is_console = 1;
181 }
182
183 static void
epockbd_cngetc(void * conscookie,u_int * type,int * data)184 epockbd_cngetc(void *conscookie, u_int *type, int *data)
185 {
186 struct epockbd_softc *sc = conscookie;
187 uint8_t cmd, key, mask;
188 int column, row;
189 #if 1
190 /*
191 * For some machines which return a strange response, it calculates
192 * using this variable.
193 */
194 int pc = 0, pr = 0;
195 #endif
196
197 *type = 0;
198 *data = 0;
199 mask = (1 << sc->sc_kbd_nrow) - 1;
200 for (column = 0; column < sc->sc_kbd_ncolumn; column++) {
201 delay(16);
202 cmd = EPOCKBD_SCAN_READ(sc);
203 cmd &= ~0xf;
204 cmd |= (EPOCKBD_COLUMN0 + column);
205 EPOCKBD_SCAN_WRITE(sc, cmd);
206 delay(16);
207 key = EPOCKBD_DATA_READ(sc) & mask;
208 if (sc->sc_state[column] != key) {
209 row = sc->sc_state[column] ^ key;
210 sc->sc_state[column] = key;
211 #if 1
212 if (*data == 0 ||
213 (row == pr && pc == 0 &&
214 column == sc->sc_kbd_ncolumn - 1))
215 #else
216 if (*data == 0)
217 #endif
218 {
219 if (key & row)
220 *type = WSCONS_EVENT_KEY_DOWN;
221 else
222 *type = WSCONS_EVENT_KEY_UP;
223 *data = EPOC2WS_KBD_DATA(row, column);
224 #if 1
225 pc = column;
226 pr = row;
227 #endif
228 }
229 }
230 }
231 }
232
233 /* ARGSUSED */
234 static void
epockbd_cnpollc(void * conckookie,int on)235 epockbd_cnpollc(void *conckookie, int on)
236 {
237 /* Nothing */
238 }
239