1 /* $NetBSD: optpoint.c,v 1.3 2005/12/11 12:17:33 christos 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 1.3 2005/12/11 12:17:33 christos 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 struct device sc_dev; 58 tx_chipset_tag_t sc_tc; 59 struct tx39spi_softc *sc_spi; 60 struct hpcio_chip *sc_hc; 61 struct device *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(struct device *, struct cfdata *, void *); 70 static void optpoint_attach(struct device *, struct device *, 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, caddr_t, int, struct proc *); 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(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(struct device *parent, struct cfdata *cf, void *aux) 102 { 103 return (ATTACH_NORMAL); 104 } 105 106 void 107 optpoint_attach(struct device *parent, struct device *self, void *aux) 108 { 109 struct txspi_attach_args *ta = aux; 110 struct optpoint_softc *sc = (void*)self; 111 struct tx39spi_softc *spi = sc->sc_spi = (void*)parent; 112 tx_chipset_tag_t tc = sc->sc_tc = ta->sa_tc; 113 struct wsmousedev_attach_args wsmaa; 114 115 sc->sc_hc = tc->tc_iochip[MFIO]; 116 sc->enabled = 0; 117 118 /* Specific SPI settings for OptPoint of HC-AJ2 */ 119 tx39spi_delayval(spi, 0); 120 tx39spi_baudrate(spi, 4); /* SPICLK Rate = 737.3 kHz */ 121 tx39spi_word(spi, 0); /* Use 8bits of data */ 122 tx39spi_phapol(spi, 0); 123 tx39spi_clkpol(spi, 1); 124 tx39spi_lsb(spi, 0); /* MSB first */ 125 126 optpoint_enable(sc); 127 printf("\n"); 128 129 wsmaa.accessops = &optpoint_accessops; 130 wsmaa.accesscookie = sc; 131 /* attach the wsmouse */ 132 sc->sc_wsmousedev = config_found(self, &wsmaa, wsmousedevprint); 133 134 /* Add a hard power hook to power saving */ 135 sc->sc_powerhook = config_hook(CONFIG_HOOK_PMEVENT, 136 CONFIG_HOOK_PMEVENT_HARDPOWER, 137 CONFIG_HOOK_SHARE, 138 optpoint_power, sc); 139 #ifdef DIAGNOSTIC 140 if (sc->sc_powerhook == 0) 141 printf("%s: unable to establish hard power hook", 142 sc->sc_dev.dv_xname); 143 #endif 144 } 145 146 int 147 optpoint_intr(void *self) 148 { 149 struct optpoint_softc *sc = (void*)self; 150 tx_chipset_tag_t tc = sc->sc_tc; 151 char data = optpoint_recv(sc) & 0xff; 152 153 #ifdef DIAGNOSTIC 154 if (sc->index >= 3){ 155 printf("%s: Receive buffer overflow\n", sc->sc_dev.dv_xname); 156 sc->index = 0; 157 memset(sc->packet, 0, 3); 158 } 159 #endif 160 if ((sc->index == 1) && (data & 0xcc) != 0x08){ 161 DPRINTF(("%s: Bad second byte (0x%02x)\n", 162 sc->sc_dev.dv_xname, data)); 163 tx_conf_write(tc, TX39_INTRCLEAR4_REG, 164 TX39_INTRSTATUS4_OPTPOINTINT); 165 return 0; 166 } 167 168 sc->packet[sc->index++] = data; 169 if (sc->index >= 3){ 170 u_int newbuttons = ((sc->packet[1] & LBUTMASK) ? 0x1 : 0) 171 | ((sc->packet[1] & RBUTMASK) ? 0x2 : 0); 172 int dx = sc->packet[2]; 173 int dy = sc->packet[0]; 174 u_int changed = (sc->buttons ^ newbuttons); 175 176 if (dx || dy || changed){ 177 DPRINTF(("%s: buttons=0x%x, dx=%d, dy=%d\n", 178 sc->sc_dev.dv_xname, newbuttons, dx, dy)); 179 wsmouse_input(sc->sc_wsmousedev, newbuttons, dx, dy, 0, 180 WSMOUSE_INPUT_DELTA); 181 } 182 sc->buttons = newbuttons; 183 sc->index = 0; 184 memset(sc->packet, 0, 3); 185 } 186 tx_conf_write(tc, TX39_INTRCLEAR4_REG, TX39_INTRSTATUS4_OPTPOINTINT); 187 188 return 0; 189 } 190 191 int 192 optpoint_enable(void *self) 193 { 194 struct optpoint_softc *sc = (void*)self; 195 196 if (!sc->enabled){ 197 tx_chipset_tag_t tc = sc->sc_tc; 198 struct hpcio_chip *hc = sc->sc_hc; 199 int s = spltty(); 200 201 DPRINTF(("%s: enable\n", sc->sc_dev.dv_xname)); 202 203 sc->enabled = 1; 204 sc->index = 0; 205 sc->buttons = 0; 206 sc->packet[0] = 0xf5; /* Disable */ 207 sc->packet[1] = 0xf2; /* Set Stream Mode */ 208 sc->packet[2] = 0xf8; /* Stanby */ 209 sc->packet[3] = 0xf4; /* Enable */ 210 211 tx39spi_enable(sc->sc_spi, 1); 212 tx_intr_establish(tc, MAKEINTR(4, TX39_INTRSTATUS4_OPTPOINTINT), 213 IST_EDGE, IPL_TTY, optpoint_initialize, sc); 214 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_C_REQ, 1); 215 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_T_RDY, 1); 216 splx(s); 217 } 218 219 return 0; 220 } 221 222 void 223 optpoint_disable(void *self) 224 { 225 struct optpoint_softc *sc = (void*)self; 226 227 if (sc->enabled){ 228 tx_chipset_tag_t tc = sc->sc_tc; 229 struct hpcio_chip *hc = sc->sc_hc; 230 int s = spltty(); 231 232 DPRINTF(("%s: disable\n", sc->sc_dev.dv_xname)); 233 234 sc->enabled = 0; 235 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_C_REQ, 0); 236 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_T_RDY, 0); 237 tx_intr_disestablish(tc, 238 (void *)MAKEINTR(4, TX39_INTRSTATUS4_OPTPOINTINT)); 239 tx39spi_enable(sc->sc_spi, 0); 240 splx(s); 241 } 242 } 243 244 int 245 optpoint_ioctl(void *self, u_long cmd, caddr_t data, int flag, struct proc *p) 246 { 247 switch (cmd) { 248 case WSMOUSEIO_GTYPE: 249 *(u_int *)data = WSMOUSE_TYPE_PS2; 250 break; 251 252 default: 253 return (EPASSTHROUGH); 254 } 255 return 0; 256 } 257 258 int 259 optpoint_initialize(void *self) 260 { 261 struct optpoint_softc *sc = (void*)self; 262 struct hpcio_chip *hc = sc->sc_hc; 263 tx_chipset_tag_t tc = sc->sc_tc; 264 265 if (sc->index < 4){ 266 optpoint_send(sc, sc->packet[sc->index++]); 267 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_C_REQ, 1); 268 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_T_RDY, 1); 269 } else { 270 tx_intr_disestablish(tc, 271 (void *)MAKEINTR(4, TX39_INTRSTATUS4_OPTPOINTINT)); 272 sc->index = 0; 273 memset(sc->packet, 0, 3); 274 tx_intr_establish(tc, 275 MAKEINTR(4, TX39_INTRSTATUS4_OPTPOINTINT), 276 IST_EDGE, IPL_TTY, optpoint_intr, sc); 277 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_C_REQ, 0); 278 (*hc->hc_portwrite)(hc, TELIOS_MFIO_OPTP_T_RDY, 1); 279 } 280 tx_conf_write(tc, TX39_INTRCLEAR4_REG, TX39_INTRSTATUS4_OPTPOINTINT); 281 282 return 0; 283 } 284 285 void 286 optpoint_send(struct optpoint_softc *sc, int data) 287 { 288 struct hpcio_chip *hc = sc->sc_hc; 289 290 while ((*hc->hc_portread)(hc, TELIOS_MFIO_OPTP_S_ENB_N)) 291 ; 292 tx39spi_put_word(sc->sc_spi, data & 0xff); 293 } 294 295 int 296 optpoint_recv(struct optpoint_softc *sc) 297 { 298 struct hpcio_chip *hc = sc->sc_hc; 299 300 optpoint_send(sc, 0x00); 301 while ((*hc->hc_portread)(hc, TELIOS_MFIO_OPTP_S_ENB_N)) 302 ; 303 return tx39spi_get_word(sc->sc_spi) & 0xff; 304 } 305 306 int 307 optpoint_power(void *self, int type, long id, void *msg) 308 { 309 struct optpoint_softc *sc = (void *)self; 310 int why = (int)msg; 311 312 switch (why) { 313 case PWR_RESUME: 314 /* power on */ 315 optpoint_enable(sc); 316 break; 317 case PWR_SUSPEND: 318 /* FALLTHROUGH */ 319 case PWR_STANDBY: 320 /* power off */ 321 optpoint_disable(sc); 322 break; 323 } 324 325 return 0; 326 } 327