1 /* $NetBSD: tc5165buf.c,v 1.8 2001/09/15 12:47:07 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(struct device *, struct cfdata *, void *); 89 void tc5165buf_attach(struct device *, struct device *, void *); 90 int tc5165buf_intr(void *); 91 int tc5165buf_poll(void *); 92 void tc5165buf_soft(void *); 93 void tc5165buf_ifsetup(struct tc5165buf_chip *); 94 95 int tc5165buf_input_establish(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(struct device *parent, struct cfdata *cf, void *aux) 105 { 106 107 return (1); 108 } 109 110 void 111 tc5165buf_attach(struct device *parent, struct device *self, void *aux) 112 { 113 struct cs_attach_args *ca = aux; 114 struct tc5165buf_softc *sc = (void*)self; 115 struct hpckbd_attach_args haa; 116 117 printf(": "); 118 sc->sc_tc = ca->ca_tc; 119 sc->sc_chip = &tc5165buf_chip; 120 121 callout_init(&sc->sc_chip->scc_soft_ch); 122 123 sc->sc_chip->scc_cst = ca->ca_csio.cstag; 124 125 if (bus_space_map(sc->sc_chip->scc_cst, ca->ca_csio.csbase, 126 ca->ca_csio.cssize, 0, &sc->sc_chip->scc_csh)) { 127 printf("can't map i/o space\n"); 128 return; 129 } 130 131 sc->sc_chip->scc_enabled = 0; 132 133 if (ca->ca_irq1 != -1) { 134 sc->sc_ih = tx_intr_establish(sc->sc_tc, ca->ca_irq1, 135 IST_EDGE, IPL_TTY, 136 tc5165buf_intr, sc); 137 printf("interrupt mode"); 138 } else { 139 sc->sc_ih = tx39_poll_establish(sc->sc_tc, 1, IPL_TTY, 140 tc5165buf_intr, sc); 141 printf("polling mode"); 142 } 143 144 if (!sc->sc_ih) { 145 printf(" can't establish interrupt\n"); 146 return; 147 } 148 149 printf("\n"); 150 151 /* setup upper interface */ 152 tc5165buf_ifsetup(sc->sc_chip); 153 154 haa.haa_ic = &sc->sc_chip->scc_if; 155 156 config_found(self, &haa, hpckbd_print); 157 } 158 159 void 160 tc5165buf_ifsetup(struct tc5165buf_chip *scc) 161 { 162 163 scc->scc_if.hii_ctx = scc; 164 scc->scc_if.hii_establish = tc5165buf_input_establish; 165 scc->scc_if.hii_poll = tc5165buf_poll; 166 } 167 168 int 169 tc5165buf_cnattach(paddr_t addr) 170 { 171 struct tc5165buf_chip *scc = &tc5165buf_chip; 172 173 scc->scc_csh = MIPS_PHYS_TO_KSEG1(addr); 174 175 tc5165buf_ifsetup(scc); 176 177 hpckbd_cnattach(&scc->scc_if); 178 179 return (0); 180 } 181 182 int 183 tc5165buf_input_establish(void *ic, struct hpckbd_if *kbdif) 184 { 185 struct tc5165buf_chip *scc = ic; 186 187 /* save hpckbd interface */ 188 scc->scc_hpckbd = kbdif; 189 190 scc->scc_enabled = 1; 191 192 return (0); 193 } 194 195 int 196 tc5165buf_intr(void *arg) 197 { 198 struct tc5165buf_softc *sc = arg; 199 struct tc5165buf_chip *scc = sc->sc_chip; 200 201 if (!scc->scc_enabled || scc->scc_queued) 202 return (0); 203 204 scc->scc_queued = 1; 205 callout_reset(&scc->scc_soft_ch, 1, tc5165buf_soft, scc); 206 207 return (0); 208 } 209 210 int 211 tc5165buf_poll(void *arg) 212 { 213 struct tc5165buf_chip *scc = arg; 214 215 if (!scc->scc_enabled) 216 return (POLL_CONT); 217 218 tc5165buf_soft(arg); 219 220 return (POLL_CONT); 221 } 222 223 void 224 tc5165buf_soft(void *arg) 225 { 226 struct tc5165buf_chip *scc = arg; 227 bus_space_tag_t t = scc->scc_cst; 228 bus_space_handle_t h = scc->scc_csh; 229 u_int16_t mask, rpat, edge; 230 int i, j, type, val; 231 int s; 232 233 hpckbd_input_hook(scc->scc_hpckbd); 234 235 /* clear scanlines */ 236 (void)bus_space_read_2(t, h, 0); 237 delay(3); 238 239 for (i = 0; i < TC5165_COLUMN_MAX; i++) { 240 rpat = bus_space_read_2(t, h, 2 << i); 241 delay(3); 242 (void)bus_space_read_2(t, h, 0); 243 delay(3); 244 if ((edge = (rpat ^ scc->scc_buf[i]))) { 245 scc->scc_buf[i] = rpat; 246 for (j = 0, mask = 1; j < TC5165_ROW_MAX; 247 j++, mask <<= 1) { 248 if (mask & edge) { 249 type = mask & rpat ? 1 : 0; 250 val = j * TC5165_COLUMN_MAX + i; 251 DPRINTF(("%d %d\n", j, i)); 252 hpckbd_input(scc->scc_hpckbd, 253 type, val); 254 } 255 } 256 } 257 } 258 259 s = spltty(); 260 scc->scc_queued = 0; 261 splx(s); 262 } 263