1 /* $NetBSD: tskp.c,v 1.3 2005/12/11 12:17:11 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is from software contributed to The NetBSD Foundation 8 * by Jesse Off. 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 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: tskp.c,v 1.3 2005/12/11 12:17:11 christos Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/proc.h> 44 #include <sys/poll.h> 45 #include <sys/conf.h> 46 #include <sys/uio.h> 47 #include <sys/types.h> 48 #include <sys/kernel.h> 49 #include <sys/device.h> 50 #include <sys/callout.h> 51 #include <sys/select.h> 52 #include <sys/conf.h> 53 54 #include <machine/bus.h> 55 #include <machine/autoconf.h> 56 57 #include <dev/wscons/wsconsio.h> 58 #include <dev/wscons/wskbdvar.h> 59 #include <dev/wscons/wsksymdef.h> 60 #include <dev/wscons/wsksymvar.h> 61 62 #include <arm/ep93xx/ep93xxreg.h> 63 #include <dev/ic/matrixkpvar.h> 64 #include <evbarm/tsarm/tspldvar.h> 65 #include <evbarm/tsarm/tsarmreg.h> 66 67 struct tskp_softc { 68 struct device sc_dev; 69 struct matrixkp_softc sc_mxkp; 70 bus_space_tag_t sc_iot; 71 bus_space_handle_t sc_gpioh; 72 }; 73 74 #define KC(n) KS_KEYCODE(n) 75 static const keysym_t mxkp_keydesc_default[] = { 76 /* pos normal shifted */ 77 KC(0), KS_1, 78 KC(1), KS_2, 79 KC(2), KS_3, 80 KC(3), KS_A, 81 KC(4), KS_4, 82 KC(5), KS_5, 83 KC(6), KS_6, 84 KC(7), KS_B, 85 KC(8), KS_7, 86 KC(9), KS_8, 87 KC(10), KS_9, 88 KC(11), KS_C, 89 KC(12), KS_asterisk, 90 KC(13), KS_0, 91 KC(14), KS_numbersign, 92 KC(15), KS_D, 93 }; 94 #undef KC 95 #define KBD_MAP(name, base, map) \ 96 { name, base, sizeof(map)/sizeof(keysym_t), map } 97 const struct wscons_keydesc mxkp_keydesctab[] = { 98 KBD_MAP(KB_US, 0, mxkp_keydesc_default), 99 {0, 0, 0, 0} 100 }; 101 #undef KBD_MAP 102 103 struct wskbd_mapdata mxkp_keymapdata = { 104 mxkp_keydesctab, 105 KB_US, 106 }; 107 108 static int tskp_match(struct device *, struct cfdata *, void *); 109 static void tskp_attach(struct device *, struct device *, void *); 110 static void tskp_scankeys(struct matrixkp_softc *, u_int32_t *); 111 112 CFATTACH_DECL(tskp, sizeof(struct tskp_softc), 113 tskp_match, tskp_attach, NULL, NULL); 114 115 static int 116 tskp_match(parent, match, aux) 117 struct device *parent; 118 struct cfdata *match; 119 void *aux; 120 { 121 return 1; 122 } 123 124 #define GPIO_GET(x) bus_space_read_1(sc->sc_iot, sc->sc_gpioh, \ 125 (EP93XX_GPIO_ ## x)) 126 127 #define GPIO_SET(x, y) bus_space_write_1(sc->sc_iot, sc->sc_gpioh, \ 128 (EP93XX_GPIO_ ## x), (y)) 129 130 #define GPIO_SETBITS(x, y) bus_space_write_1(sc->sc_iot, sc->sc_gpioh, \ 131 (EP93XX_GPIO_ ## x), GPIO_GET(x) | (y)) 132 133 #define GPIO_CLEARBITS(x, y) bus_space_write_1(sc->sc_iot, sc->sc_gpioh, \ 134 (EP93XX_GPIO_ ## x), GPIO_GET(x) & (~(y))) 135 136 static void 137 tskp_attach(parent, self, aux) 138 struct device *parent; 139 struct device *self; 140 void *aux; 141 { 142 struct tskp_softc *sc = (void *)self; 143 struct tspld_attach_args *taa = aux; 144 struct wskbddev_attach_args wa; 145 146 sc->sc_iot = taa->ta_iot; 147 if (bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_GPIO, 148 EP93XX_APB_GPIO_SIZE, 0, &sc->sc_gpioh)) 149 panic("tskp_attach: couldn't map GPIO registers"); 150 151 sc->sc_mxkp.mxkp_scankeys = tskp_scankeys; 152 sc->sc_mxkp.mxkp_event = mxkp_wskbd_event; 153 sc->sc_mxkp.mxkp_nkeys = 16; /* 4 x 4 matrix keypad */ 154 sc->sc_mxkp.debounce_stable_ms = 3; 155 sc->sc_mxkp.sc_dev = self; 156 sc->sc_mxkp.poll_freq = hz; 157 158 GPIO_SET(PBDDR, 0xff); /* tristate all lines */ 159 160 printf(": 4x4 matrix keypad, polling at %d hz\n", hz); 161 162 mxkp_attach(&sc->sc_mxkp); 163 wa.console = 0; 164 wa.keymap = &mxkp_keymapdata; 165 wa.accessops = &mxkp_accessops; 166 wa.accesscookie = &sc->sc_mxkp; 167 sc->sc_mxkp.sc_wskbddev = config_found(self, &wa, wskbddevprint); 168 } 169 170 static void 171 tskp_scankeys(mxkp_sc, keys) 172 struct matrixkp_softc *mxkp_sc; 173 u_int32_t *keys; 174 { 175 struct tskp_softc *sc = (void *)mxkp_sc->sc_dev; 176 u_int32_t pos; 177 178 for(pos = 0; pos < 4; pos++) { 179 GPIO_SET(PBDDR, (1 << pos)); 180 GPIO_SET(PBDR, ~(1 << pos)); 181 delay(1); 182 keys[0] |= (~(GPIO_GET(PBDR) >> 4) & 0xf) << (4 * pos); 183 } 184 } 185