1 /* $NetBSD: optpoint.c,v 1.9 2021/08/07 16:18:54 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2005 HAMAJIMA Katsuomi. 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 AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 /* 29 * OptOpint on Telios HC-AJ2 30 */ 31 32 #include <sys/cdefs.h> 33 34 __KERNEL_RCSID(0, "$NetBSD: optpoint.c,v 1.9 2021/08/07 16:18:54 thorpej Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/device.h> 39 #include <machine/bus.h> 40 #include <machine/config_hook.h> 41 #include <dev/hpc/hpciovar.h> 42 #include <dev/wscons/wsconsio.h> 43 #include <dev/wscons/wsmousevar.h> 44 #include <hpcmips/tx/tx39var.h> 45 #include <hpcmips/tx/tx39spivar.h> 46 #include <hpcmips/tx/tx39icureg.h> 47 48 #undef OPTPOINTDEBUG 49 50 #ifdef OPTPOINTDEBUG 51 #define DPRINTF(arg) printf arg 52 #else 53 #define DPRINTF(arg) 54 #endif 55 56 struct optpoint_softc { 57 device_t sc_dev; 58 tx_chipset_tag_t sc_tc; 59 struct tx39spi_softc *sc_spi; 60 struct hpcio_chip *sc_hc; 61 device_t sc_wsmousedev; 62 void *sc_powerhook; /* power management hook */ 63 char packet[4]; 64 int index; /* number of bytes received for this packet */ 65 u_int buttons; /* mouse button status */ 66 int enabled; 67 }; 68 69 static int optpoint_match(device_t, cfdata_t, void *); 70 static void optpoint_attach(device_t, device_t, void *); 71 static int optpoint_intr(void *); 72 static int optpoint_enable(void *); 73 static void optpoint_disable(void *); 74 static int optpoint_ioctl(void *, u_long, void *, int, struct lwp *); 75 static int optpoint_initialize(void *); 76 static void optpoint_send(struct optpoint_softc *, int); 77 static int optpoint_recv(struct optpoint_softc *); 78 static int optpoint_power(void *, int, long, void *); 79 80 #define LBUTMASK 0x01 81 #define RBUTMASK 0x02 82 83 #define TX39_INTRSTATUS4_OPTPOINTINT TX39_INTRSTATUS4_CARDIORDNEGINT 84 #define TX39_IO_MFIO_CARDREG 11 85 #define TX39_IO_MFIO_CARDIOWR 10 86 #define TX39_IO_MFIO_CARDIORD 9 87 #define TELIOS_MFIO_OPTP_T_RDY TX39_IO_MFIO_CARDREG 88 #define TELIOS_MFIO_OPTP_C_REQ TX39_IO_MFIO_CARDIOWR 89 #define TELIOS_MFIO_OPTP_S_ENB_N TX39_IO_MFIO_CARDIORD 90 91 CFATTACH_DECL_NEW(optpoint, sizeof(struct optpoint_softc), 92 optpoint_match, optpoint_attach, NULL, NULL); 93 94 const struct wsmouse_accessops optpoint_accessops = { 95 optpoint_enable, 96 optpoint_ioctl, 97 optpoint_disable, 98 }; 99 100 int 101 optpoint_match(device_t parent, cfdata_t cf, void *aux) 102 { 103 return (ATTACH_NORMAL); 104 } 105 106 void 107 optpoint_attach(device_t parent, device_t self, void *aux) 108 { 109 struct txspi_attach_args *ta = aux; 110 struct optpoint_softc *sc = device_private(self); 111 struct tx39spi_softc *spi = sc->sc_spi = device_private(parent); 112 tx_chipset_tag_t tc = sc->sc_tc = ta->sa_tc; 113 struct wsmousedev_attach_args wsmaa; 114 115 sc->sc_dev = self; 116 sc->sc_hc = tc->tc_iochip[MFIO]; 117 sc->enabled = 0; 118 119 /* Specific SPI settings for OptPoint of HC-AJ2 */ 120 tx39spi_delayval(spi, 0); 121 tx39spi_baudrate(spi, 4); /* SPICLK Rate = 737.3 kHz */ 122 tx39spi_word(spi, 0); /* Use 8bits of data */ 123 tx39spi_phapol(spi, 0); 124 tx39spi_clkpol(spi, 1); 125 tx39spi_lsb(spi, 0); /* MSB first */ 126 127 optpoint_enable(sc); 128 printf("\n"); 129 130 wsmaa.accessops = &optpoint_accessops; 131 wsmaa.accesscookie = sc; 132 /* attach the wsmouse */ 133 sc->sc_wsmousedev = config_found(self, &wsmaa, wsmousedevprint, 134 CFARGS_NONE); 135 136 /* Add a hard power hook to power saving */ 137 sc->sc_powerhook = config_hook(CONFIG_HOOK_PMEVENT, 138 CONFIG_HOOK_PMEVENT_HARDPOWER, 139 CONFIG_HOOK_SHARE, 140 optpoint_power, sc); 141 #ifdef DIAGNOSTIC 142 if (sc->sc_powerhook == 0) 143 printf("%s: unable to establish hard power hook", 144 device_xname(sc->sc_dev)); 145 #endif 146 } 147 148 int 149 optpoint_intr(void *arg) 150 { 151 struct optpoint_softc *sc = arg; 152 tx_chipset_tag_t tc = sc->sc_tc; 153 char data = optpoint_recv(sc) & 0xff; 154 155 #ifdef DIAGNOSTIC 156 if (sc->index >= 3){ 157 printf("%s: Receive buffer overflow\n", device_xname(sc->sc_dev)); 158 sc->index = 0; 159 memset(sc->packet, 0, 3); 160 } 161 #endif 162 if ((sc->index == 1) && (data & 0xcc) != 0x08){ 163 DPRINTF(("%s: Bad second byte (0x%02x)\n", 164 device_xname(sc->sc_dev), data)); 165 tx_conf_write(tc, TX39_INTRCLEAR4_REG, 166 TX39_INTRSTATUS4_OPTPOINTINT); 167 return 0; 168 } 169 170 sc->packet[sc->index++] = data; 171 if (sc->index >= 3){ 172 u_int newbuttons = ((sc->packet[1] & LBUTMASK) ? 0x1 : 0) 173 | ((sc->packet[1] & RBUTMASK) ? 0x2 : 0); 174 int dx = sc->packet[2]; 175 int dy = sc->packet[0]; 176 u_int changed = (sc->buttons ^ newbuttons); 177 178 if (dx || dy || changed){ 179 DPRINTF(("%s: buttons=0x%x, dx=%d, dy=%d\n", 180 device_xname(sc->sc_dev), newbuttons, dx, dy)); 181 wsmouse_input(sc->sc_wsmousedev, 182 newbuttons, 183 dx, dy, 0, 0, 184 WSMOUSE_INPUT_DELTA); 185 } 186 sc->buttons = newbuttons; 187 sc->index = 0; 188 memset(sc->packet, 0, 3); 189 } 190 tx_conf_write(tc, TX39_INTRCLEAR4_REG, TX39_INTRSTATUS4_OPTPOINTINT); 191 192 return 0; 193 } 194 195 int 196 optpoint_enable(void *arg) 197 { 198 struct optpoint_softc *sc = arg; 199 200 if (!sc->enabled){ 201 tx_chipset_tag_t tc = sc->sc_tc; 202 struct hpcio_chip *hc = sc->sc_hc; 203 int s = spltty(); 204 205 DPRINTF(("%s: enable\n", device_xname(sc->sc_dev))); 206 207 sc->enabled = 1; 208 sc->index = 0; 209 sc->buttons = 0; 210 sc->packet[0] = 0xf5; /* Disable */ 211 sc->packet[1] = 0xf2; /* Set Stream Mode */ 212 sc->packet[2] = 0xf8; /* Stanby */ 213 sc->packet[3] = 0xf4; /* Enable */ 214 215 tx39spi_enable(sc->sc_spi, 1); 216 tx_intr_establish(tc, MAKEINTR(4, TX39_INTRSTATUS4_OPTPOINTINT), 217 IST_EDGE, IPL_TTY, optpoint_initialize, sc); 218 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_C_REQ, 1); 219 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_T_RDY, 1); 220 splx(s); 221 } 222 223 return 0; 224 } 225 226 void 227 optpoint_disable(void *arg) 228 { 229 struct optpoint_softc *sc = arg; 230 231 if (sc->enabled){ 232 tx_chipset_tag_t tc = sc->sc_tc; 233 struct hpcio_chip *hc = sc->sc_hc; 234 int s = spltty(); 235 236 DPRINTF(("%s: disable\n", device_xname(sc->sc_dev))); 237 238 sc->enabled = 0; 239 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_C_REQ, 0); 240 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_T_RDY, 0); 241 tx_intr_disestablish(tc, 242 (void *)MAKEINTR(4, TX39_INTRSTATUS4_OPTPOINTINT)); 243 tx39spi_enable(sc->sc_spi, 0); 244 splx(s); 245 } 246 } 247 248 int 249 optpoint_ioctl(void *cookie, u_long cmd, void *data, int flag, struct lwp *l) 250 { 251 switch (cmd) { 252 case WSMOUSEIO_GTYPE: 253 *(u_int *)data = WSMOUSE_TYPE_PS2; 254 break; 255 256 default: 257 return (EPASSTHROUGH); 258 } 259 return 0; 260 } 261 262 int 263 optpoint_initialize(void *arg) 264 { 265 struct optpoint_softc *sc = arg; 266 struct hpcio_chip *hc = sc->sc_hc; 267 tx_chipset_tag_t tc = sc->sc_tc; 268 269 if (sc->index < 4){ 270 optpoint_send(sc, sc->packet[sc->index++]); 271 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_C_REQ, 1); 272 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_T_RDY, 1); 273 } else { 274 tx_intr_disestablish(tc, 275 (void *)MAKEINTR(4, TX39_INTRSTATUS4_OPTPOINTINT)); 276 sc->index = 0; 277 memset(sc->packet, 0, 3); 278 tx_intr_establish(tc, 279 MAKEINTR(4, TX39_INTRSTATUS4_OPTPOINTINT), 280 IST_EDGE, IPL_TTY, optpoint_intr, sc); 281 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_C_REQ, 0); 282 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_T_RDY, 1); 283 } 284 tx_conf_write(tc, TX39_INTRCLEAR4_REG, TX39_INTRSTATUS4_OPTPOINTINT); 285 286 return 0; 287 } 288 289 void 290 optpoint_send(struct optpoint_softc *sc, int data) 291 { 292 struct hpcio_chip *hc = sc->sc_hc; 293 294 while ((*hc->hc_portread)(hc, TELIOS_MFIO_OPTP_S_ENB_N)) 295 ; 296 tx39spi_put_word(sc->sc_spi, data & 0xff); 297 } 298 299 int 300 optpoint_recv(struct optpoint_softc *sc) 301 { 302 struct hpcio_chip *hc = sc->sc_hc; 303 304 optpoint_send(sc, 0x00); 305 while ((*hc->hc_portread)(hc, TELIOS_MFIO_OPTP_S_ENB_N)) 306 ; 307 return tx39spi_get_word(sc->sc_spi) & 0xff; 308 } 309 310 int 311 optpoint_power(void *arg, int type, long id, void *msg) 312 { 313 struct optpoint_softc *sc = arg; 314 int why = (int)msg; 315 316 switch (why) { 317 case PWR_RESUME: 318 /* power on */ 319 optpoint_enable(sc); 320 break; 321 case PWR_SUSPEND: 322 /* FALLTHROUGH */ 323 case PWR_STANDBY: 324 /* power off */ 325 optpoint_disable(sc); 326 break; 327 } 328 329 return 0; 330 } 331
Indexes created Sun Sep 21 15:09:59 GMT 2025