pmu.c revision 1.8
1 /* $NetBSD: pmu.c,v 1.8 2007/08/08 22:19:55 macallan Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Michael Lorenz 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of The NetBSD Foundation nor the names of its 16 * contributors may be used to endorse or promote products derived 17 * from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: pmu.c,v 1.8 2007/08/08 22:19:55 macallan Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/device.h> 39 #include <sys/proc.h> 40 #include <sys/kthread.h> 41 42 #include <machine/bus.h> 43 #include <machine/autoconf.h> 44 #include <dev/clock_subr.h> 45 #include <dev/i2c/i2cvar.h> 46 47 #include <macppc/dev/viareg.h> 48 #include <macppc/dev/pmuvar.h> 49 #include <macppc/dev/batteryvar.h> 50 51 #include <dev/ofw/openfirm.h> 52 #include <dev/adb/adbvar.h> 53 #include "opt_pmu.h" 54 #include "nadb.h" 55 56 #ifdef PMU_DEBUG 57 #define DPRINTF printf 58 #else 59 #define DPRINTF while (0) printf 60 #endif 61 62 #define PMU_NOTREADY 0x1 /* has not been initialized yet */ 63 #define PMU_IDLE 0x2 /* the bus is currently idle */ 64 #define PMU_OUT 0x3 /* sending out a command */ 65 #define PMU_IN 0x4 /* receiving data */ 66 67 static void pmu_attach(struct device *, struct device *, void *); 68 static int pmu_match(struct device *, struct cfdata *, void *); 69 static void pmu_autopoll(void *, int); 70 71 static int pmu_intr(void *); 72 73 struct pmu_softc { 74 struct device sc_dev; 75 void *sc_ih; 76 struct todr_chip_handle sc_todr; 77 struct adb_bus_accessops sc_adbops; 78 struct i2c_controller sc_i2c; 79 struct lock sc_buslock; 80 struct pmu_ops sc_pmu_ops; 81 bus_space_tag_t sc_memt; 82 bus_space_handle_t sc_memh; 83 uint32_t sc_flags; 84 #define PMU_HAS_BACKLIGHT_CONTROL 1 85 int sc_node; 86 int sc_iic_done; 87 int sc_error; 88 int sc_autopoll; 89 int sc_pending_eject; 90 int sc_brightness, sc_brightness_wanted; 91 int sc_volume, sc_volume_wanted; 92 /* deferred processing */ 93 lwp_t *sc_thread; 94 /* signalling the event thread */ 95 int sc_event; 96 /* ADB */ 97 void (*sc_adb_handler)(void *, int, uint8_t *); 98 void *sc_adb_cookie; 99 void (*sc_callback)(void *); 100 void *sc_cb_cookie; 101 }; 102 103 CFATTACH_DECL(pmu, sizeof(struct pmu_softc), 104 pmu_match, pmu_attach, NULL, NULL); 105 106 static inline void pmu_write_reg(struct pmu_softc *, int, uint8_t); 107 static inline uint8_t pmu_read_reg(struct pmu_softc *, int); 108 static void pmu_in(struct pmu_softc *); 109 static void pmu_out(struct pmu_softc *); 110 static void pmu_ack_off(struct pmu_softc *); 111 static void pmu_ack_on(struct pmu_softc *); 112 static int pmu_intr_state(struct pmu_softc *); 113 114 static void pmu_init(struct pmu_softc *); 115 static void pmu_thread(void *); 116 static void pmu_eject_card(struct pmu_softc *, int); 117 static void pmu_update_brightness(struct pmu_softc *); 118 static void pmu_register_callback(void *, void (*)(void *), void *); 119 /* 120 * send a message to the PMU. 121 */ 122 static int pmu_send(void *, int, int, uint8_t *, int, uint8_t *); 123 static void pmu_adb_poll(void *); 124 static int pmu_todr_set(todr_chip_handle_t, volatile struct timeval *); 125 static int pmu_todr_get(todr_chip_handle_t, volatile struct timeval *); 126 127 static int pmu_adb_handler(void *, int, uint8_t *); 128 129 static struct pmu_softc *pmu0 = NULL; 130 131 /* ADB bus attachment stuff */ 132 static int pmu_adb_send(void *, int, int, int, uint8_t *); 133 static int pmu_adb_set_handler(void *, void (*)(void *, int, uint8_t *), void *); 134 135 /* i2c stuff */ 136 #if 0 137 static int pmu_i2c_acquire_bus(void *, int); 138 static void pmu_i2c_release_bus(void *, int); 139 static int pmu_i2c_exec(void *, i2c_op_t, i2c_addr_t, const void *, size_t, 140 void *, size_t, int); 141 #endif 142 143 static void pmu_attach_legacy_battery(struct pmu_softc *); 144 static void pmu_attach_smart_battery(struct pmu_softc *, int); 145 static int pmu_print(void *, const char *); 146 147 /* these values shows that number of data returned after 'send' cmd is sent */ 148 static signed char pm_send_cmd_type[] = { 149 -1, -1, -1, -1, -1, -1, -1, -1, 150 -1, -1, -1, -1, -1, -1, -1, -1, 151 0x01, 0x01, -1, -1, -1, -1, -1, -1, 152 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, 153 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 154 0x00, -1, -1, -1, -1, -1, -1, -1, 155 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 156 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 157 0x01, 0x01, -1, -1, -1, -1, -1, -1, 158 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 159 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 160 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 161 0x02, -1, -1, -1, -1, -1, -1, -1, 162 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 163 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 164 0x00, 0x00, -1, -1, -1, -1, 0x04, 0x04, 165 0x04, -1, 0x00, -1, -1, -1, -1, -1, 166 0x00, -1, -1, -1, -1, -1, -1, -1, 167 0x01, 0x02, -1, -1, -1, -1, -1, -1, 168 0x00, 0x00, -1, -1, -1, -1, -1, -1, 169 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 170 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1, 171 -1, -1, -1, -1, -1, -1, -1, -1, 172 -1, -1, -1, -1, -1, -1, -1, -1, 173 -1, -1, -1, -1, -1, -1, -1, -1, 174 -1, -1, -1, -1, -1, -1, -1, -1, 175 0x00, -1, -1, -1, -1, -1, -1, -1, 176 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, 177 -1, 0x04, 0x00, -1, -1, -1, -1, -1, 178 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, 179 -1, -1, -1, -1, -1, -1, -1, -1, 180 -1, -1, -1, -1, -1, -1, -1, -1 181 }; 182 183 /* these values shows that number of data returned after 'receive' cmd is sent */ 184 static signed char pm_receive_cmd_type[] = { 185 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 186 -1, -1, -1, -1, -1, -1, -1, -1, 187 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 188 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 189 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 190 -1, -1, -1, -1, -1, -1, -1, -1, 191 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 192 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 193 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 194 0x02, 0x02, -1, -1, -1, -1, -1, -1, 195 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 196 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 197 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 198 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 199 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 200 -1, -1, -1, -1, -1, -1, 0x01, 0x01, 201 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 202 0x06, -1, -1, -1, -1, -1, -1, -1, 203 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 204 0x02, 0x02, -1, -1, -1, -1, -1, -1, 205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 206 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1, 207 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 208 -1, -1, -1, -1, -1, -1, -1, -1, 209 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 210 -1, -1, -1, -1, -1, -1, -1, -1, 211 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 212 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 213 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 214 -1, -1, 0x02, -1, -1, -1, -1, 0x00, 215 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 216 -1, -1, -1, -1, -1, -1, -1, -1, 217 }; 218 219 static const char *has_legacy_battery[] = { 220 "AAPL,3500", 221 "AAPL,3400/2400", 222 NULL }; 223 224 static const char *has_two_smart_batteries[] = { 225 "AAPL,PowerBook1998", 226 "PowerBook1,1", 227 NULL }; 228 229 static int 230 pmu_match(struct device *parent, struct cfdata *cf, void *aux) 231 { 232 struct confargs *ca = aux; 233 234 if (ca->ca_nreg < 8) 235 return 0; 236 237 if (ca->ca_nintr < 4) 238 return 0; 239 240 if (strcmp(ca->ca_name, "via-pmu") == 0) { 241 return 10; 242 } 243 244 return 0; 245 } 246 247 static void 248 pmu_attach(struct device *parent, struct device *dev, void *aux) 249 { 250 struct confargs *ca = aux; 251 struct pmu_softc *sc = (struct pmu_softc *)dev; 252 #if notyet 253 struct i2cbus_attach_args iba; 254 #endif 255 uint32_t regs[16]; 256 int irq = ca->ca_intr[0]; 257 int node, extint_node, root_node; 258 int nbat = 1, i, pmnode; 259 uint8_t cmd[2] = {2, 0}; 260 uint8_t resp[16]; 261 char name[256]; 262 263 extint_node = getnodebyname(OF_parent(ca->ca_node), "extint-gpio1"); 264 if (extint_node) 265 OF_getprop(extint_node, "interrupts", &irq, 4); 266 267 printf(" irq %d: ", irq); 268 269 sc->sc_node = ca->ca_node; 270 sc->sc_memt = ca->ca_tag; 271 272 root_node = OF_finddevice("/"); 273 274 sc->sc_error = 0; 275 sc->sc_autopoll = 0; 276 sc->sc_pending_eject = 0; 277 sc->sc_brightness = sc->sc_brightness_wanted = 0x80; 278 sc->sc_volume = sc->sc_volume_wanted = 0x80; 279 sc->sc_flags = 0; 280 sc->sc_callback = NULL; 281 282 if (bus_space_map(sc->sc_memt, ca->ca_reg[0] + ca->ca_baseaddr, 283 ca->ca_reg[1], 0, &sc->sc_memh) != 0) { 284 285 printf("%s: unable to map registers\n", dev->dv_xname); 286 return; 287 } 288 sc->sc_ih = intr_establish(irq, IST_LEVEL, IPL_TTY, pmu_intr, sc); 289 290 pmu_init(sc); 291 292 sc->sc_pmu_ops.cookie = sc; 293 sc->sc_pmu_ops.do_command = pmu_send; 294 sc->sc_pmu_ops.register_callback = pmu_register_callback; 295 296 if (pmu0 == NULL) 297 pmu0 = sc; 298 299 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 300 301 /* check what kind of PMU we're talking to */ 302 if (pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp) > 1) 303 printf(" rev. %d", resp[1]); 304 printf("\n"); 305 306 node = OF_child(sc->sc_node); 307 308 while (node != 0) { 309 310 if (OF_getprop(node, "name", name, 256) == 0) 311 goto next; 312 313 if (strncmp(name, "pmu-i2c", 8) == 0) { 314 315 printf("%s: initializing IIC bus\n", 316 sc->sc_dev.dv_xname); 317 goto next; 318 } 319 if (strncmp(name, "adb", 4) == 0) { 320 321 printf("%s: initializing ADB\n", sc->sc_dev.dv_xname); 322 sc->sc_adbops.cookie = sc; 323 sc->sc_adbops.send = pmu_adb_send; 324 sc->sc_adbops.poll = pmu_adb_poll; 325 sc->sc_adbops.autopoll = pmu_autopoll; 326 sc->sc_adbops.set_handler = pmu_adb_set_handler; 327 #if NNADB > 0 328 config_found_ia(dev, "adb_bus", &sc->sc_adbops, 329 nadb_print); 330 #endif 331 goto next; 332 } 333 if (strncmp(name, "rtc", 4) == 0) { 334 335 printf("%s: initializing RTC\n", sc->sc_dev.dv_xname); 336 sc->sc_todr.todr_gettime = pmu_todr_get; 337 sc->sc_todr.todr_settime = pmu_todr_set; 338 sc->sc_todr.cookie = sc; 339 todr_attach(&sc->sc_todr); 340 goto next; 341 } 342 if (strncmp(name, "battery", 8) == 0) 343 goto next; 344 345 printf("%s: %s not configured\n", sc->sc_dev.dv_xname, name); 346 next: 347 node = OF_peer(node); 348 } 349 350 if (OF_finddevice("/bandit/ohare") != -1) { 351 printf("%s: enabling ohare backlight control\n", 352 device_xname(dev)); 353 sc->sc_flags |= PMU_HAS_BACKLIGHT_CONTROL; 354 cmd[0] = 0; 355 cmd[1] = 0; 356 memset(resp, 0, 6); 357 if (pmu_send(sc, PMU_READ_BRIGHTNESS, 1, cmd, 16, resp) > 1) { 358 sc->sc_brightness_wanted = resp[1]; 359 pmu_update_brightness(sc); 360 } 361 } 362 363 /* attach batteries */ 364 if (of_compatible(root_node, has_legacy_battery) != -1) { 365 366 pmu_attach_legacy_battery(sc); 367 } else if (of_compatible(root_node, has_two_smart_batteries) != -1) { 368 369 pmu_attach_smart_battery(sc, 0); 370 pmu_attach_smart_battery(sc, 1); 371 } else { 372 373 /* check how many batteries we have */ 374 pmnode = getnodebyname(ca->ca_node, "power-mgt"); 375 if (pmnode == -1) 376 goto bat_done; 377 if (OF_getprop(pmnode, "prim-info", regs, sizeof(regs)) < 24) 378 goto bat_done; 379 nbat = regs[6] >> 16; 380 for (i = 0; i < nbat; i++) 381 pmu_attach_smart_battery(sc, i); 382 } 383 bat_done: 384 385 #if notyet 386 iba.iba_tag = &sc->sc_i2c; 387 sc->sc_i2c.ic_cookie = sc; 388 sc->sc_i2c.ic_acquire_bus = pmu_i2c_acquire_bus; 389 sc->sc_i2c.ic_release_bus = pmu_i2c_release_bus; 390 sc->sc_i2c.ic_send_start = NULL; 391 sc->sc_i2c.ic_send_stop = NULL; 392 sc->sc_i2c.ic_initiate_xfer = NULL; 393 sc->sc_i2c.ic_read_byte = NULL; 394 sc->sc_i2c.ic_write_byte = NULL; 395 sc->sc_i2c.ic_exec = pmu_i2c_exec; 396 config_found_ia(&sc->sc_dev, "i2cbus", &iba, iicbus_print); 397 #endif 398 399 if (kthread_create(PRI_NONE, 0, NULL, pmu_thread, sc, &sc->sc_thread, 400 "%s", "pmu") != 0) { 401 printf("pmu: unable to create event kthread"); 402 } 403 } 404 405 static void 406 pmu_register_callback(void *pmu_cookie, void (*cb)(void *), void *cookie) 407 { 408 struct pmu_softc *sc = pmu_cookie; 409 410 sc->sc_callback = cb; 411 sc->sc_cb_cookie = cookie; 412 } 413 414 static void 415 pmu_init(struct pmu_softc *sc) 416 { 417 uint8_t pmu_imask, resp[16]; 418 419 pmu_imask = 420 PMU_INT_PCEJECT | PMU_INT_SNDBRT | PMU_INT_ADB/* | PMU_INT_TICK*/; 421 pmu_imask |= PMU_INT_BATTERY; 422 pmu_imask |= PMU_INT_ENVIRONMENT; 423 pmu_send(sc, PMU_SET_IMASK, 1, &pmu_imask, 16, resp); 424 425 pmu_write_reg(sc, vIER, 0x90); /* enable VIA interrupts */ 426 } 427 428 static inline void 429 pmu_write_reg(struct pmu_softc *sc, int offset, uint8_t value) 430 { 431 432 bus_space_write_1(sc->sc_memt, sc->sc_memh, offset, value); 433 } 434 435 static inline uint8_t 436 pmu_read_reg(struct pmu_softc *sc, int offset) 437 { 438 439 return bus_space_read_1(sc->sc_memt, sc->sc_memh, offset); 440 } 441 442 static inline int 443 pmu_send_byte(struct pmu_softc *sc, uint8_t data) 444 { 445 446 pmu_out(sc); 447 pmu_write_reg(sc, vSR, data); 448 pmu_ack_off(sc); 449 /* wait for intr to come up */ 450 /* XXX should add a timeout and bail if it expires */ 451 do {} while (pmu_intr_state(sc) == 0); 452 pmu_ack_on(sc); 453 do {} while (pmu_intr_state(sc)); 454 pmu_ack_on(sc); 455 DPRINTF(" %02x>", data); 456 return 0; 457 } 458 459 static inline int 460 pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 461 { 462 volatile uint8_t scratch; 463 pmu_in(sc); 464 scratch = pmu_read_reg(sc, vSR); 465 pmu_ack_off(sc); 466 /* wait for intr to come up */ 467 do {} while (pmu_intr_state(sc) == 0); 468 pmu_ack_on(sc); 469 do {} while (pmu_intr_state(sc)); 470 *data = pmu_read_reg(sc, vSR); 471 DPRINTF(" <%02x", *data); 472 return 0; 473 } 474 475 static int 476 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 477 uint8_t *out_msg) 478 { 479 struct pmu_softc *sc = cookie; 480 int i, rcv_len = -1, s; 481 uint8_t out_len, intreg; 482 483 DPRINTF("pmu_send: "); 484 485 s = splhigh(); 486 intreg = pmu_read_reg(sc, vIER); 487 intreg &= 0x10; 488 pmu_write_reg(sc, vIER, intreg); 489 490 /* wait idle */ 491 do {} while (pmu_intr_state(sc)); 492 sc->sc_error = 0; 493 494 /* send command */ 495 pmu_send_byte(sc, cmd); 496 497 /* send length if necessary */ 498 if (pm_send_cmd_type[cmd] < 0) { 499 pmu_send_byte(sc, length); 500 } 501 502 for (i = 0; i < length; i++) { 503 pmu_send_byte(sc, in_msg[i]); 504 DPRINTF(" next "); 505 } 506 DPRINTF("done sending\n"); 507 508 /* see if there's data to read */ 509 rcv_len = pm_receive_cmd_type[cmd]; 510 if (rcv_len == 0) 511 goto done; 512 513 /* read command */ 514 if (rcv_len == 1) { 515 pmu_read_byte(sc, out_msg); 516 goto done; 517 } else 518 out_msg[0] = cmd; 519 if (rcv_len < 0) { 520 pmu_read_byte(sc, &out_len); 521 rcv_len = out_len + 1; 522 } 523 for (i = 1; i < min(rcv_len, rlen); i++) 524 pmu_read_byte(sc, &out_msg[i]); 525 526 done: 527 DPRINTF("\n"); 528 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 529 splx(s); 530 531 return rcv_len; 532 } 533 534 static void 535 pmu_adb_poll(void *cookie) 536 { 537 struct pmu_softc *sc = cookie; 538 539 pmu_intr(sc); 540 } 541 542 static void 543 pmu_in(struct pmu_softc *sc) 544 { 545 uint8_t reg; 546 547 reg = pmu_read_reg(sc, vACR); 548 reg &= ~vSR_OUT; 549 reg |= 0x0c; 550 pmu_write_reg(sc, vACR, reg); 551 } 552 553 static void 554 pmu_out(struct pmu_softc *sc) 555 { 556 uint8_t reg; 557 558 reg = pmu_read_reg(sc, vACR); 559 reg |= vSR_OUT; 560 reg |= 0x0c; 561 pmu_write_reg(sc, vACR, reg); 562 } 563 564 static void 565 pmu_ack_off(struct pmu_softc *sc) 566 { 567 uint8_t reg; 568 569 reg = pmu_read_reg(sc, vBufB); 570 reg &= ~vPB4; 571 pmu_write_reg(sc, vBufB, reg); 572 } 573 574 static void 575 pmu_ack_on(struct pmu_softc *sc) 576 { 577 uint8_t reg; 578 579 reg = pmu_read_reg(sc, vBufB); 580 reg |= vPB4; 581 pmu_write_reg(sc, vBufB, reg); 582 } 583 584 static int 585 pmu_intr_state(struct pmu_softc *sc) 586 { 587 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 588 } 589 590 static int 591 pmu_intr(void *arg) 592 { 593 struct pmu_softc *sc = arg; 594 unsigned int s, len, i; 595 uint8_t resp[16]; 596 597 s = splhigh(); /* can't be too careful - might be called */ 598 /* from a routine, NOT an interrupt */ 599 600 DPRINTF(":"); 601 602 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 603 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 604 if ((len < 1) || (resp[1] == 0)) 605 goto done; 606 #ifdef PMU_DEBUG 607 { 608 DPRINTF("intr: %02x", resp[0]); 609 for (i = 1; i < len; i++) 610 DPRINTF(" %02x", resp[i]); 611 DPRINTF("\n"); 612 } 613 #endif 614 if (resp[1] & PMU_INT_ADB) { 615 pmu_adb_handler(sc, len - 1, &resp[1]); 616 goto done; 617 } 618 if (resp[1] & PMU_INT_SNDBRT) { 619 /* deal with the brightness / volume control buttons */ 620 DPRINTF("brightness: %d volume %d\n", resp[2], resp[3]); 621 sc->sc_brightness_wanted = resp[2]; 622 sc->sc_volume_wanted = resp[3]; 623 wakeup(&sc->sc_event); 624 goto done; 625 } 626 if (resp[1] & PMU_INT_PCEJECT) { 627 /* deal with PCMCIA eject buttons */ 628 DPRINTF("card eject %d\n", resp[3]); 629 sc->sc_pending_eject |= (resp[3] & 3); 630 wakeup(&sc->sc_event); 631 goto done; 632 } 633 if (resp[1] & PMU_INT_BATTERY) { 634 /* deal with battery messages */ 635 printf("battery:"); 636 for (i = 2; i < len; i++) 637 printf(" %02x", resp[i]); 638 printf("\n"); 639 goto done; 640 } 641 if (resp[1] & PMU_INT_ENVIRONMENT) { 642 #ifdef PMU_VERBOSE 643 /* deal with environment messages */ 644 printf("environment:"); 645 for (i = 2; i < len; i++) 646 printf(" %02x", resp[i]); 647 printf("\n"); 648 #endif 649 goto done; 650 } 651 if (resp[1] & PMU_INT_TICK) { 652 /* don't bother */ 653 goto done; 654 } 655 656 /* unknown interrupt code?! */ 657 #ifdef PMU_DEBUG 658 printf("pmu intr: %02x:", resp[1]); 659 for (i = 2; i < len; i++) 660 printf(" %02x", resp[i]); 661 printf("\n"); 662 #endif 663 done: 664 splx(s); 665 return 1; 666 } 667 668 #if 0 669 static int 670 pmu_error_handler(void *cookie, int len, uint8_t *data) 671 { 672 struct pmu_softc *sc = cookie; 673 674 /* 675 * something went wrong 676 * byte 3 seems to be the failed command 677 */ 678 sc->sc_error = 1; 679 wakeup(&sc->sc_todev); 680 return 0; 681 } 682 #endif 683 #define DIFF19041970 2082844800 684 685 static int 686 pmu_todr_get(todr_chip_handle_t tch, volatile struct timeval *tvp) 687 { 688 struct pmu_softc *sc = tch->cookie; 689 uint32_t sec; 690 uint8_t resp[16]; 691 692 DPRINTF("pmu_todr_get\n"); 693 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 694 695 memcpy(&sec, &resp[1], 4); 696 tvp->tv_sec = sec - DIFF19041970; 697 DPRINTF("tod: %ld\n", tvp->tv_sec); 698 tvp->tv_usec = 0; 699 return 0; 700 } 701 702 static int 703 pmu_todr_set(todr_chip_handle_t tch, volatile struct timeval *tvp) 704 { 705 struct pmu_softc *sc = tch->cookie; 706 uint32_t sec; 707 uint8_t resp[16]; 708 709 sec = tvp->tv_sec + DIFF19041970; 710 if (pmu_send(sc, PMU_SET_RTC, 4, (uint8_t *)&sec, 16, resp) >= 0) 711 return 0; 712 return -1; 713 } 714 715 void 716 pmu_poweroff() 717 { 718 struct pmu_softc *sc; 719 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 720 uint8_t resp[16]; 721 722 if (pmu0 == NULL) 723 return; 724 sc = pmu0; 725 if (pmu_send(sc, PMU_POWER_OFF, 4, cmd, 16, resp) >= 0) 726 while (1); 727 } 728 729 void 730 pmu_restart() 731 { 732 struct pmu_softc *sc; 733 uint8_t resp[16]; 734 735 if (pmu0 == NULL) 736 return; 737 sc = pmu0; 738 if (pmu_send(sc, PMU_RESET_CPU, 0, NULL, 16, resp) >= 0) 739 while (1); 740 } 741 742 static void 743 pmu_autopoll(void *cookie, int flag) 744 { 745 struct pmu_softc *sc = cookie; 746 /* magical incantation to re-enable autopolling */ 747 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (flag >> 8) & 0xff, flag & 0xff}; 748 uint8_t resp[16]; 749 750 if (sc->sc_autopoll == flag) 751 return; 752 753 if (flag) { 754 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 755 } else { 756 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 757 } 758 sc->sc_autopoll = flag & 0xffff; 759 } 760 761 static int 762 pmu_adb_handler(void *cookie, int len, uint8_t *data) 763 { 764 struct pmu_softc *sc = cookie; 765 uint8_t resp[16]; 766 767 if (sc->sc_adb_handler != NULL) { 768 sc->sc_adb_handler(sc->sc_adb_cookie, len, data); 769 /* 770 * the PMU will turn off autopolling after each LISTEN so we 771 * need to re-enable it here whenever we receive an ACK for a 772 * LISTEN command 773 */ 774 if ((data[1] & 0x0c) == 0x08) { 775 uint8_t cmd[] = {0, 0x86, (sc->sc_autopoll >> 8) & 0xff, 776 sc->sc_autopoll & 0xff}; 777 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 778 } 779 return 0; 780 } 781 return -1; 782 } 783 784 static int 785 pmu_adb_send(void *cookie, int poll, int command, int len, uint8_t *data) 786 { 787 struct pmu_softc *sc = cookie; 788 int i, replen; 789 uint8_t packet[16], resp[16]; 790 791 /* construct an ADB command packet and send it */ 792 packet[0] = command; 793 packet[1] = 0; 794 packet[2] = len; 795 for (i = 0; i < len; i++) 796 packet[i + 3] = data[i]; 797 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 798 799 return 0; 800 } 801 802 static int 803 pmu_adb_set_handler(void *cookie, void (*handler)(void *, int, uint8_t *), 804 void *hcookie) 805 { 806 struct pmu_softc *sc = cookie; 807 808 /* register a callback for incoming ADB messages */ 809 sc->sc_adb_handler = handler; 810 sc->sc_adb_cookie = hcookie; 811 return 0; 812 } 813 #if 0 814 static int 815 pmu_i2c_acquire_bus(void *cookie, int flags) 816 { 817 /* nothing yet */ 818 return 0; 819 } 820 821 static void 822 pmu_i2c_release_bus(void *cookie, int flags) 823 { 824 /* nothing here either */ 825 } 826 827 static int 828 pmu_i2c_exec(void *cookie, i2c_op_t op, i2c_addr_t addr, const void *_send, 829 size_t send_len, void *_recv, size_t recv_len, int flags) 830 { 831 #if 0 832 struct pmu_softc *sc = cookie; 833 const uint8_t *send = _send; 834 uint8_t *recv = _recv; 835 uint8_t command[16] = {PMU_POWERMGR, PMGR_IIC}; 836 837 DPRINTF("pmu_i2c_exec(%02x)\n", addr); 838 command[2] = addr; 839 840 memcpy(&command[3], send, min((int)send_len, 12)); 841 842 sc->sc_iic_done = 0; 843 pmu_send(sc, sc->sc_polling, send_len + 3, command); 844 845 while ((sc->sc_iic_done == 0) && (sc->sc_error == 0)) { 846 if (sc->sc_polling) { 847 pmu_poll(sc); 848 } else 849 tsleep(&sc->sc_todev, 0, "i2c", 1000); 850 } 851 852 if (sc->sc_error) { 853 sc->sc_error = 0; 854 return -1; 855 } 856 857 /* see if we're supposed to do a read */ 858 if (recv_len > 0) { 859 sc->sc_iic_done = 0; 860 command[2] |= 1; 861 command[3] = 0; 862 863 /* 864 * XXX we need to do something to limit the size of the answer 865 * - apparently the chip keeps sending until we tell it to stop 866 */ 867 pmu_send(sc, sc->sc_polling, 3, command); 868 while ((sc->sc_iic_done == 0) && (sc->sc_error == 0)) { 869 if (sc->sc_polling) { 870 pmu_poll(sc); 871 } else 872 tsleep(&sc->sc_todev, 0, "i2c", 1000); 873 } 874 875 if (sc->sc_error) { 876 printf("error trying to read\n"); 877 sc->sc_error = 0; 878 return -1; 879 } 880 } 881 882 if ((sc->sc_iic_done > 3) && (recv_len > 0)) { 883 /* we got an answer */ 884 recv[0] = sc->sc_iic_val; 885 printf("ret: %02x\n", sc->sc_iic_val); 886 return 1; 887 } 888 #endif 889 return 0; 890 } 891 #endif 892 893 static void 894 pmu_eject_card(struct pmu_softc *sc, int socket) 895 { 896 int s; 897 uint8_t buf[] = {socket | 4}; 898 uint8_t res[4]; 899 900 s = splhigh(); 901 sc->sc_pending_eject &= ~socket; 902 splx(s); 903 pmu_send(sc, PMU_EJECT_PCMCIA, 1, buf, 4, res); 904 } 905 906 static void 907 pmu_update_brightness(struct pmu_softc *sc) 908 { 909 int val; 910 uint8_t cmd[2], resp[16]; 911 912 if (sc->sc_brightness == sc->sc_brightness_wanted) 913 return; 914 915 if ((sc->sc_flags & PMU_HAS_BACKLIGHT_CONTROL) == 0) { 916 917 printf("%s: this PMU doesn't support backlight control\n", 918 sc->sc_dev.dv_xname); 919 sc->sc_brightness = sc->sc_brightness_wanted; 920 return; 921 } 922 923 if (sc->sc_brightness_wanted == 0) { 924 925 /* turn backlight off completely */ 926 cmd[0] = PMU_POW_OFF | PMU_POW_BACKLIGHT; 927 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 928 sc->sc_brightness = sc->sc_brightness_wanted; 929 930 /* don't bother with brightness */ 931 return; 932 } 933 934 /* turn backlight on if needed */ 935 if (sc->sc_brightness == 0) { 936 cmd[0] = PMU_POW_ON | PMU_POW_BACKLIGHT; 937 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 938 } 939 940 DPRINTF("pmu_update_brightness: %d -> %d\n", sc->sc_brightness, 941 sc->sc_brightness_wanted); 942 943 val = 0x7f - (sc->sc_brightness_wanted >> 1); 944 if (val < 0x08) 945 val = 0x08; 946 if (val > 0x78) 947 val = 0x78; 948 cmd[0] = val; 949 pmu_send(sc, PMU_SET_BRIGHTNESS, 1, cmd, 16, resp); 950 951 sc->sc_brightness = sc->sc_brightness_wanted; 952 } 953 954 static void 955 pmu_thread(void *cookie) 956 { 957 struct pmu_softc *sc = cookie; 958 //time_t time_bat = time_second; 959 int ticks = hz, i; 960 961 while (1) { 962 tsleep(&sc->sc_event, PWAIT, "wait", ticks); 963 if (sc->sc_pending_eject != 0) { 964 DPRINTF("eject %d\n", sc->sc_pending_eject); 965 for (i = 1; i < 3; i++) { 966 if (i & sc->sc_pending_eject) 967 pmu_eject_card(sc, i); 968 } 969 } 970 971 /* see if we need to update brightness */ 972 if (sc->sc_brightness_wanted != sc->sc_brightness) { 973 pmu_update_brightness(sc); 974 } 975 976 /* see if we need to update audio volume */ 977 if (sc->sc_volume_wanted != sc->sc_volume) { 978 #if 0 979 set_volume(sc->sc_volume_wanted); 980 #endif 981 sc->sc_volume = sc->sc_volume_wanted; 982 } 983 984 if (sc->sc_callback != NULL) 985 sc->sc_callback(sc->sc_cb_cookie); 986 } 987 } 988 989 static int 990 pmu_print(void *aux, const char *what) 991 { 992 993 return 0; 994 } 995 996 static void 997 pmu_attach_legacy_battery(struct pmu_softc *sc) 998 { 999 struct battery_attach_args baa; 1000 1001 baa.baa_type = BATTERY_TYPE_LEGACY; 1002 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1003 config_found_ia(&sc->sc_dev, "pmu_bus", &baa, pmu_print); 1004 } 1005 1006 static void 1007 pmu_attach_smart_battery(struct pmu_softc *sc, int num) 1008 { 1009 struct battery_attach_args baa; 1010 1011 baa.baa_type = BATTERY_TYPE_SMART; 1012 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1013 baa.baa_num = num; 1014 config_found_ia(&sc->sc_dev, "pmu_bus", &baa, pmu_print); 1015 } 1016
Indexes created Tue Sep 23 07:09:52 GMT 2025