1 /* $NetBSD: tc5165buf.c,v 1.7 2001/02/22 18:38:01 uch Exp $ */ 2 3 /*- 4 * Copyright (c) 1999-2001 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 /* 40 * Device driver for TOSHIBA TC5165BFTS, PHILIPS 74ALVC16241/245 41 * buffer chip 42 */ 43 44 #include "opt_tx39_debug.h" 45 #include "opt_use_poll.h" 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/callout.h> 50 #include <sys/device.h> 51 52 #include <machine/bus.h> 53 #include <machine/intr.h> 54 55 #include <dev/hpc/hpckbdvar.h> 56 57 #include <hpcmips/tx/tx39var.h> 58 #include <hpcmips/tx/txcsbusvar.h> 59 #include <hpcmips/dev/tc5165bufvar.h> 60 61 #define TC5165_ROW_MAX 16 62 #define TC5165_COLUMN_MAX 8 63 64 #ifdef TC5165DEBUG 65 #define DPRINTF(arg) printf arg 66 #else 67 #define DPRINTF(arg) 68 #endif 69 70 struct tc5165buf_chip { 71 bus_space_tag_t scc_cst; 72 bus_space_handle_t scc_csh; 73 u_int16_t scc_buf[TC5165_COLUMN_MAX]; 74 int scc_enabled; 75 int scc_queued; 76 struct callout scc_soft_ch; 77 struct hpckbd_ic_if scc_if; 78 struct hpckbd_if *scc_hpckbd; 79 }; 80 81 struct tc5165buf_softc { 82 struct device sc_dev; 83 struct tc5165buf_chip *sc_chip; 84 tx_chipset_tag_t sc_tc; 85 void *sc_ih; 86 }; 87 88 int tc5165buf_match __P((struct device*, struct cfdata*, void*)); 89 void tc5165buf_attach __P((struct device*, struct device*, void*)); 90 int tc5165buf_intr __P((void*)); 91 int tc5165buf_poll __P((void*)); 92 void tc5165buf_soft __P((void*)); 93 void tc5165buf_ifsetup __P((struct tc5165buf_chip*)); 94 95 int tc5165buf_input_establish __P((void*, struct hpckbd_if*)); 96 97 struct tc5165buf_chip tc5165buf_chip; 98 99 struct cfattach tc5165buf_ca = { 100 sizeof(struct tc5165buf_softc), tc5165buf_match, tc5165buf_attach 101 }; 102 103 int 104 tc5165buf_match(parent, cf, aux) 105 struct device *parent; 106 struct cfdata *cf; 107 void *aux; 108 { 109 return 1; 110 } 111 112 void 113 tc5165buf_attach(parent, self, aux) 114 struct device *parent; 115 struct device *self; 116 void *aux; 117 { 118 struct cs_attach_args *ca = aux; 119 struct tc5165buf_softc *sc = (void*)self; 120 struct hpckbd_attach_args haa; 121 122 printf(": "); 123 sc->sc_tc = ca->ca_tc; 124 sc->sc_chip = &tc5165buf_chip; 125 126 callout_init(&sc->sc_chip->scc_soft_ch); 127 128 sc->sc_chip->scc_cst = ca->ca_csio.cstag; 129 130 if (bus_space_map(sc->sc_chip->scc_cst, ca->ca_csio.csbase, 131 ca->ca_csio.cssize, 0, &sc->sc_chip->scc_csh)) { 132 printf("can't map i/o space\n"); 133 return; 134 } 135 136 sc->sc_chip->scc_enabled = 0; 137 138 if (ca->ca_irq1 != -1) { 139 sc->sc_ih = tx_intr_establish(sc->sc_tc, ca->ca_irq1, 140 IST_EDGE, IPL_TTY, 141 tc5165buf_intr, sc); 142 printf("interrupt mode"); 143 } else { 144 sc->sc_ih = tx39_poll_establish(sc->sc_tc, 1, IPL_TTY, 145 tc5165buf_intr, sc); 146 printf("polling mode"); 147 } 148 149 if (!sc->sc_ih) { 150 printf(" can't establish interrupt\n"); 151 return; 152 } 153 154 printf("\n"); 155 156 /* setup upper interface */ 157 tc5165buf_ifsetup(sc->sc_chip); 158 159 haa.haa_ic = &sc->sc_chip->scc_if; 160 161 config_found(self, &haa, hpckbd_print); 162 } 163 164 void 165 tc5165buf_ifsetup(scc) 166 struct tc5165buf_chip *scc; 167 { 168 scc->scc_if.hii_ctx = scc; 169 scc->scc_if.hii_establish = tc5165buf_input_establish; 170 scc->scc_if.hii_poll = tc5165buf_poll; 171 } 172 173 int 174 tc5165buf_cnattach(addr) 175 paddr_t addr; 176 { 177 struct tc5165buf_chip *scc = &tc5165buf_chip; 178 179 scc->scc_csh = MIPS_PHYS_TO_KSEG1(addr); 180 181 tc5165buf_ifsetup(scc); 182 183 hpckbd_cnattach(&scc->scc_if); 184 185 return 0; 186 } 187 188 int 189 tc5165buf_input_establish(ic, kbdif) 190 void *ic; 191 struct hpckbd_if *kbdif; 192 { 193 struct tc5165buf_chip *scc = ic; 194 195 /* save hpckbd interface */ 196 scc->scc_hpckbd = kbdif; 197 198 scc->scc_enabled = 1; 199 200 return 0; 201 } 202 203 int 204 tc5165buf_intr(arg) 205 void *arg; 206 { 207 struct tc5165buf_softc *sc = arg; 208 struct tc5165buf_chip *scc = sc->sc_chip; 209 210 if (!scc->scc_enabled || scc->scc_queued) 211 return 0; 212 213 scc->scc_queued = 1; 214 callout_reset(&scc->scc_soft_ch, 1, tc5165buf_soft, scc); 215 216 return 0; 217 } 218 219 int 220 tc5165buf_poll(arg) 221 void *arg; 222 { 223 struct tc5165buf_chip *scc = arg; 224 225 if (!scc->scc_enabled) 226 return POLL_CONT; 227 228 tc5165buf_soft(arg); 229 230 return POLL_CONT; 231 } 232 233 void 234 tc5165buf_soft(arg) 235 void *arg; 236 { 237 struct tc5165buf_chip *scc = arg; 238 bus_space_tag_t t = scc->scc_cst; 239 bus_space_handle_t h = scc->scc_csh; 240 u_int16_t mask, rpat, edge; 241 int i, j, type, val; 242 int s; 243 244 hpckbd_input_hook(scc->scc_hpckbd); 245 246 /* clear scanlines */ 247 (void)bus_space_read_2(t, h, 0); 248 delay(3); 249 250 for (i = 0; i < TC5165_COLUMN_MAX; i++) { 251 rpat = bus_space_read_2(t, h, 2 << i); 252 delay(3); 253 (void)bus_space_read_2(t, h, 0); 254 delay(3); 255 if ((edge = (rpat ^ scc->scc_buf[i]))) { 256 scc->scc_buf[i] = rpat; 257 for (j = 0, mask = 1; j < TC5165_ROW_MAX; 258 j++, mask <<= 1) { 259 if (mask & edge) { 260 type = mask & rpat ? 1 : 0; 261 val = j * TC5165_COLUMN_MAX + i; 262 DPRINTF(("%d %d\n", j, i)); 263 hpckbd_input(scc->scc_hpckbd, 264 type, val); 265 } 266 } 267 } 268 } 269 270 s = spltty(); 271 scc->scc_queued = 0; 272 splx(s); 273 } 274