pmu.c revision 1.7
1 /* $NetBSD: pmu.c,v 1.7 2007/07/09 20:52:22 ad 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 1.7 2007/07/09 20:52:22 ad 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 } 355 356 /* attach batteries */ 357 if (of_compatible(root_node, has_legacy_battery) != -1) { 358 359 pmu_attach_legacy_battery(sc); 360 } else if (of_compatible(root_node, has_two_smart_batteries) != -1) { 361 362 pmu_attach_smart_battery(sc, 0); 363 pmu_attach_smart_battery(sc, 1); 364 } else { 365 366 /* check how many batteries we have */ 367 pmnode = getnodebyname(ca->ca_node, "power-mgt"); 368 if (pmnode == -1) 369 goto bat_done; 370 if (OF_getprop(pmnode, "prim-info", regs, sizeof(regs)) < 24) 371 goto bat_done; 372 nbat = regs[6] >> 16; 373 for (i = 0; i < nbat; i++) 374 pmu_attach_smart_battery(sc, i); 375 } 376 bat_done: 377 378 #if notyet 379 iba.iba_tag = &sc->sc_i2c; 380 sc->sc_i2c.ic_cookie = sc; 381 sc->sc_i2c.ic_acquire_bus = pmu_i2c_acquire_bus; 382 sc->sc_i2c.ic_release_bus = pmu_i2c_release_bus; 383 sc->sc_i2c.ic_send_start = NULL; 384 sc->sc_i2c.ic_send_stop = NULL; 385 sc->sc_i2c.ic_initiate_xfer = NULL; 386 sc->sc_i2c.ic_read_byte = NULL; 387 sc->sc_i2c.ic_write_byte = NULL; 388 sc->sc_i2c.ic_exec = pmu_i2c_exec; 389 config_found_ia(&sc->sc_dev, "i2cbus", &iba, iicbus_print); 390 #endif 391 392 if (kthread_create(PRI_NONE, 0, NULL, pmu_thread, sc, &sc->sc_thread, 393 "%s", "pmu") != 0) { 394 printf("pmu: unable to create event kthread"); 395 } 396 } 397 398 static void 399 pmu_register_callback(void *pmu_cookie, void (*cb)(void *), void *cookie) 400 { 401 struct pmu_softc *sc = pmu_cookie; 402 403 sc->sc_callback = cb; 404 sc->sc_cb_cookie = cookie; 405 } 406 407 static void 408 pmu_init(struct pmu_softc *sc) 409 { 410 uint8_t pmu_imask, resp[16]; 411 412 pmu_imask = 413 PMU_INT_PCEJECT | PMU_INT_SNDBRT | PMU_INT_ADB/* | PMU_INT_TICK*/; 414 pmu_imask |= PMU_INT_BATTERY; 415 pmu_imask |= PMU_INT_ENVIRONMENT; 416 pmu_send(sc, PMU_SET_IMASK, 1, &pmu_imask, 16, resp); 417 418 pmu_write_reg(sc, vIER, 0x90); /* enable VIA interrupts */ 419 } 420 421 static inline void 422 pmu_write_reg(struct pmu_softc *sc, int offset, uint8_t value) 423 { 424 425 bus_space_write_1(sc->sc_memt, sc->sc_memh, offset, value); 426 } 427 428 static inline uint8_t 429 pmu_read_reg(struct pmu_softc *sc, int offset) 430 { 431 432 return bus_space_read_1(sc->sc_memt, sc->sc_memh, offset); 433 } 434 435 static inline int 436 pmu_send_byte(struct pmu_softc *sc, uint8_t data) 437 { 438 439 pmu_out(sc); 440 pmu_write_reg(sc, vSR, data); 441 pmu_ack_off(sc); 442 /* wait for intr to come up */ 443 /* XXX should add a timeout and bail if it expires */ 444 do {} while (pmu_intr_state(sc) == 0); 445 pmu_ack_on(sc); 446 do {} while (pmu_intr_state(sc)); 447 pmu_ack_on(sc); 448 DPRINTF(" %02x>", data); 449 return 0; 450 } 451 452 static inline int 453 pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 454 { 455 volatile uint8_t scratch; 456 pmu_in(sc); 457 scratch = pmu_read_reg(sc, vSR); 458 pmu_ack_off(sc); 459 /* wait for intr to come up */ 460 do {} while (pmu_intr_state(sc) == 0); 461 pmu_ack_on(sc); 462 do {} while (pmu_intr_state(sc)); 463 *data = pmu_read_reg(sc, vSR); 464 DPRINTF(" <%02x", *data); 465 return 0; 466 } 467 468 static int 469 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 470 uint8_t *out_msg) 471 { 472 struct pmu_softc *sc = cookie; 473 int i, rcv_len = -1, s; 474 uint8_t out_len, intreg; 475 476 DPRINTF("pmu_send: "); 477 478 s = splhigh(); 479 intreg = pmu_read_reg(sc, vIER); 480 intreg &= 0x10; 481 pmu_write_reg(sc, vIER, intreg); 482 483 /* wait idle */ 484 do {} while (pmu_intr_state(sc)); 485 sc->sc_error = 0; 486 487 /* send command */ 488 pmu_send_byte(sc, cmd); 489 490 /* send length if necessary */ 491 if (pm_send_cmd_type[cmd] < 0) { 492 pmu_send_byte(sc, length); 493 } 494 495 for (i = 0; i < length; i++) { 496 pmu_send_byte(sc, in_msg[i]); 497 DPRINTF(" next "); 498 } 499 DPRINTF("done sending\n"); 500 501 /* see if there's data to read */ 502 rcv_len = pm_receive_cmd_type[cmd]; 503 if (rcv_len == 0) 504 goto done; 505 506 /* read command */ 507 if (rcv_len == 1) { 508 pmu_read_byte(sc, out_msg); 509 goto done; 510 } else 511 out_msg[0] = cmd; 512 if (rcv_len < 0) { 513 pmu_read_byte(sc, &out_len); 514 rcv_len = out_len + 1; 515 } 516 for (i = 1; i < min(rcv_len, rlen); i++) 517 pmu_read_byte(sc, &out_msg[i]); 518 519 done: 520 DPRINTF("\n"); 521 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 522 splx(s); 523 524 return rcv_len; 525 } 526 527 static void 528 pmu_adb_poll(void *cookie) 529 { 530 struct pmu_softc *sc = cookie; 531 532 pmu_intr(sc); 533 } 534 535 static void 536 pmu_in(struct pmu_softc *sc) 537 { 538 uint8_t reg; 539 540 reg = pmu_read_reg(sc, vACR); 541 reg &= ~vSR_OUT; 542 reg |= 0x0c; 543 pmu_write_reg(sc, vACR, reg); 544 } 545 546 static void 547 pmu_out(struct pmu_softc *sc) 548 { 549 uint8_t reg; 550 551 reg = pmu_read_reg(sc, vACR); 552 reg |= vSR_OUT; 553 reg |= 0x0c; 554 pmu_write_reg(sc, vACR, reg); 555 } 556 557 static void 558 pmu_ack_off(struct pmu_softc *sc) 559 { 560 uint8_t reg; 561 562 reg = pmu_read_reg(sc, vBufB); 563 reg &= ~vPB4; 564 pmu_write_reg(sc, vBufB, reg); 565 } 566 567 static void 568 pmu_ack_on(struct pmu_softc *sc) 569 { 570 uint8_t reg; 571 572 reg = pmu_read_reg(sc, vBufB); 573 reg |= vPB4; 574 pmu_write_reg(sc, vBufB, reg); 575 } 576 577 static int 578 pmu_intr_state(struct pmu_softc *sc) 579 { 580 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 581 } 582 583 static int 584 pmu_intr(void *arg) 585 { 586 struct pmu_softc *sc = arg; 587 unsigned int s, len, i; 588 uint8_t resp[16]; 589 590 s = splhigh(); /* can't be too careful - might be called */ 591 /* from a routine, NOT an interrupt */ 592 593 DPRINTF(":"); 594 595 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 596 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 597 if ((len < 1) || (resp[1] == 0)) 598 goto done; 599 #ifdef PMU_DEBUG 600 { 601 DPRINTF("intr: %02x", resp[0]); 602 for (i = 1; i < len; i++) 603 DPRINTF(" %02x", resp[i]); 604 DPRINTF("\n"); 605 } 606 #endif 607 if (resp[1] & PMU_INT_ADB) { 608 pmu_adb_handler(sc, len - 1, &resp[1]); 609 goto done; 610 } 611 if (resp[1] & PMU_INT_SNDBRT) { 612 /* deal with the brightness / volume control buttons */ 613 DPRINTF("brightness: %d volume %d\n", resp[2], resp[3]); 614 sc->sc_brightness_wanted = resp[2]; 615 sc->sc_volume_wanted = resp[3]; 616 wakeup(&sc->sc_event); 617 goto done; 618 } 619 if (resp[1] & PMU_INT_PCEJECT) { 620 /* deal with PCMCIA eject buttons */ 621 DPRINTF("card eject %d\n", resp[3]); 622 sc->sc_pending_eject |= (resp[3] & 3); 623 wakeup(&sc->sc_event); 624 goto done; 625 } 626 if (resp[1] & PMU_INT_BATTERY) { 627 /* deal with battery messages */ 628 printf("battery:"); 629 for (i = 2; i < len; i++) 630 printf(" %02x", resp[i]); 631 printf("\n"); 632 goto done; 633 } 634 if (resp[1] & PMU_INT_ENVIRONMENT) { 635 #ifdef PMU_VERBOSE 636 /* deal with environment messages */ 637 printf("environment:"); 638 for (i = 2; i < len; i++) 639 printf(" %02x", resp[i]); 640 printf("\n"); 641 #endif 642 goto done; 643 } 644 if (resp[1] & PMU_INT_TICK) { 645 /* don't bother */ 646 goto done; 647 } 648 649 /* unknown interrupt code?! */ 650 #ifdef PMU_DEBUG 651 printf("pmu intr: %02x:", resp[1]); 652 for (i = 2; i < len; i++) 653 printf(" %02x", resp[i]); 654 printf("\n"); 655 #endif 656 done: 657 splx(s); 658 return 1; 659 } 660 661 #if 0 662 static int 663 pmu_error_handler(void *cookie, int len, uint8_t *data) 664 { 665 struct pmu_softc *sc = cookie; 666 667 /* 668 * something went wrong 669 * byte 3 seems to be the failed command 670 */ 671 sc->sc_error = 1; 672 wakeup(&sc->sc_todev); 673 return 0; 674 } 675 #endif 676 #define DIFF19041970 2082844800 677 678 static int 679 pmu_todr_get(todr_chip_handle_t tch, volatile struct timeval *tvp) 680 { 681 struct pmu_softc *sc = tch->cookie; 682 uint32_t sec; 683 uint8_t resp[16]; 684 685 DPRINTF("pmu_todr_get\n"); 686 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 687 688 memcpy(&sec, &resp[1], 4); 689 tvp->tv_sec = sec - DIFF19041970; 690 DPRINTF("tod: %ld\n", tvp->tv_sec); 691 tvp->tv_usec = 0; 692 return 0; 693 } 694 695 static int 696 pmu_todr_set(todr_chip_handle_t tch, volatile struct timeval *tvp) 697 { 698 struct pmu_softc *sc = tch->cookie; 699 uint32_t sec; 700 uint8_t resp[16]; 701 702 sec = tvp->tv_sec + DIFF19041970; 703 if (pmu_send(sc, PMU_SET_RTC, 4, (uint8_t *)&sec, 16, resp) >= 0) 704 return 0; 705 return -1; 706 } 707 708 void 709 pmu_poweroff() 710 { 711 struct pmu_softc *sc; 712 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 713 uint8_t resp[16]; 714 715 if (pmu0 == NULL) 716 return; 717 sc = pmu0; 718 if (pmu_send(sc, PMU_POWER_OFF, 4, cmd, 16, resp) >= 0) 719 while (1); 720 } 721 722 void 723 pmu_restart() 724 { 725 struct pmu_softc *sc; 726 uint8_t resp[16]; 727 728 if (pmu0 == NULL) 729 return; 730 sc = pmu0; 731 if (pmu_send(sc, PMU_RESET_CPU, 0, NULL, 16, resp) >= 0) 732 while (1); 733 } 734 735 static void 736 pmu_autopoll(void *cookie, int flag) 737 { 738 struct pmu_softc *sc = cookie; 739 /* magical incantation to re-enable autopolling */ 740 uint8_t cmd[] = {0, 0x86, (flag >> 8) & 0xff, flag & 0xff}; 741 uint8_t resp[16]; 742 743 if (sc->sc_autopoll == flag) 744 return; 745 746 if (flag) { 747 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 748 } else { 749 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 750 } 751 sc->sc_autopoll = flag & 0xffff; 752 } 753 754 static int 755 pmu_adb_handler(void *cookie, int len, uint8_t *data) 756 { 757 struct pmu_softc *sc = cookie; 758 uint8_t resp[16]; 759 760 if (sc->sc_adb_handler != NULL) { 761 sc->sc_adb_handler(sc->sc_adb_cookie, len, data); 762 /* 763 * the PMU will turn off autopolling after each LISTEN so we 764 * need to re-enable it here whenever we receive an ACK for a 765 * LISTEN command 766 */ 767 if ((data[1] & 0x0c) == 0x08) { 768 uint8_t cmd[] = {0, 0x86, (sc->sc_autopoll >> 8) & 0xff, 769 sc->sc_autopoll & 0xff}; 770 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 771 } 772 return 0; 773 } 774 return -1; 775 } 776 777 static int 778 pmu_adb_send(void *cookie, int poll, int command, int len, uint8_t *data) 779 { 780 struct pmu_softc *sc = cookie; 781 int i, replen; 782 uint8_t packet[16], resp[16]; 783 784 /* construct an ADB command packet and send it */ 785 packet[0] = command; 786 packet[1] = 0; 787 packet[2] = len; 788 for (i = 0; i < len; i++) 789 packet[i + 3] = data[i]; 790 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 791 792 return 0; 793 } 794 795 static int 796 pmu_adb_set_handler(void *cookie, void (*handler)(void *, int, uint8_t *), 797 void *hcookie) 798 { 799 struct pmu_softc *sc = cookie; 800 801 /* register a callback for incoming ADB messages */ 802 sc->sc_adb_handler = handler; 803 sc->sc_adb_cookie = hcookie; 804 return 0; 805 } 806 #if 0 807 static int 808 pmu_i2c_acquire_bus(void *cookie, int flags) 809 { 810 /* nothing yet */ 811 return 0; 812 } 813 814 static void 815 pmu_i2c_release_bus(void *cookie, int flags) 816 { 817 /* nothing here either */ 818 } 819 820 static int 821 pmu_i2c_exec(void *cookie, i2c_op_t op, i2c_addr_t addr, const void *_send, 822 size_t send_len, void *_recv, size_t recv_len, int flags) 823 { 824 #if 0 825 struct pmu_softc *sc = cookie; 826 const uint8_t *send = _send; 827 uint8_t *recv = _recv; 828 uint8_t command[16] = {PMU_POWERMGR, PMGR_IIC}; 829 830 DPRINTF("pmu_i2c_exec(%02x)\n", addr); 831 command[2] = addr; 832 833 memcpy(&command[3], send, min((int)send_len, 12)); 834 835 sc->sc_iic_done = 0; 836 pmu_send(sc, sc->sc_polling, send_len + 3, command); 837 838 while ((sc->sc_iic_done == 0) && (sc->sc_error == 0)) { 839 if (sc->sc_polling) { 840 pmu_poll(sc); 841 } else 842 tsleep(&sc->sc_todev, 0, "i2c", 1000); 843 } 844 845 if (sc->sc_error) { 846 sc->sc_error = 0; 847 return -1; 848 } 849 850 /* see if we're supposed to do a read */ 851 if (recv_len > 0) { 852 sc->sc_iic_done = 0; 853 command[2] |= 1; 854 command[3] = 0; 855 856 /* 857 * XXX we need to do something to limit the size of the answer 858 * - apparently the chip keeps sending until we tell it to stop 859 */ 860 pmu_send(sc, sc->sc_polling, 3, command); 861 while ((sc->sc_iic_done == 0) && (sc->sc_error == 0)) { 862 if (sc->sc_polling) { 863 pmu_poll(sc); 864 } else 865 tsleep(&sc->sc_todev, 0, "i2c", 1000); 866 } 867 868 if (sc->sc_error) { 869 printf("error trying to read\n"); 870 sc->sc_error = 0; 871 return -1; 872 } 873 } 874 875 if ((sc->sc_iic_done > 3) && (recv_len > 0)) { 876 /* we got an answer */ 877 recv[0] = sc->sc_iic_val; 878 printf("ret: %02x\n", sc->sc_iic_val); 879 return 1; 880 } 881 #endif 882 return 0; 883 } 884 #endif 885 886 static void 887 pmu_eject_card(struct pmu_softc *sc, int socket) 888 { 889 int s; 890 uint8_t buf[] = {socket | 4}; 891 uint8_t res[4]; 892 893 s = splhigh(); 894 sc->sc_pending_eject &= ~socket; 895 splx(s); 896 pmu_send(sc, PMU_EJECT_PCMCIA, 1, buf, 4, res); 897 } 898 899 static void 900 pmu_update_brightness(struct pmu_softc *sc) 901 { 902 int val; 903 uint8_t cmd[2], resp[16]; 904 905 if (sc->sc_brightness == sc->sc_brightness_wanted) 906 return; 907 908 if ((sc->sc_flags & PMU_HAS_BACKLIGHT_CONTROL) == 0) { 909 910 printf("%s: this PMU doesn't support backlight control\n", 911 sc->sc_dev.dv_xname); 912 sc->sc_brightness = sc->sc_brightness_wanted; 913 return; 914 } 915 916 if (sc->sc_brightness_wanted == 0) { 917 918 /* turn backlight off completely */ 919 cmd[0] = PMU_POW_OFF | PMU_POW_BACKLIGHT; 920 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 921 sc->sc_brightness = sc->sc_brightness_wanted; 922 923 /* don't bother with brightness */ 924 return; 925 } 926 927 /* turn backlight on if needed */ 928 if (sc->sc_brightness == 0) { 929 cmd[0] = PMU_POW_ON | PMU_POW_BACKLIGHT; 930 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 931 } 932 933 DPRINTF("pmu_update_brightness: %d -> %d\n", sc->sc_brightness, 934 sc->sc_brightness_wanted); 935 936 val = 0x7f - (sc->sc_brightness_wanted >> 1); 937 if (val < 0x08) 938 val = 0x08; 939 if (val > 0x78) 940 val = 0x78; 941 cmd[0] = val; 942 pmu_send(sc, PMU_SET_BRIGHTNESS, 1, cmd, 16, resp); 943 944 sc->sc_brightness = sc->sc_brightness_wanted; 945 } 946 947 static void 948 pmu_thread(void *cookie) 949 { 950 struct pmu_softc *sc = cookie; 951 //time_t time_bat = time_second; 952 int ticks = hz, i; 953 954 while (1) { 955 tsleep(&sc->sc_event, PWAIT, "wait", ticks); 956 if (sc->sc_pending_eject != 0) { 957 DPRINTF("eject %d\n", sc->sc_pending_eject); 958 for (i = 1; i < 3; i++) { 959 if (i & sc->sc_pending_eject) 960 pmu_eject_card(sc, i); 961 } 962 } 963 #if NLWPM > 0 964 lwpm_poll(); 965 #endif 966 /* see if we need to update brightness */ 967 if (sc->sc_brightness_wanted != sc->sc_brightness) { 968 pmu_update_brightness(sc); 969 } 970 971 /* see if we need to update audio volume */ 972 if (sc->sc_volume_wanted != sc->sc_volume) { 973 //set_volume(sc->sc_volume_wanted); 974 sc->sc_volume = sc->sc_volume_wanted; 975 } 976 977 if (sc->sc_callback != NULL) 978 sc->sc_callback(sc->sc_cb_cookie); 979 } 980 } 981 982 static int 983 pmu_print(void *aux, const char *what) 984 { 985 986 return 0; 987 } 988 989 static void 990 pmu_attach_legacy_battery(struct pmu_softc *sc) 991 { 992 struct battery_attach_args baa; 993 994 baa.baa_type = BATTERY_TYPE_LEGACY; 995 baa.baa_pmu_ops = &sc->sc_pmu_ops; 996 config_found_ia(&sc->sc_dev, "pmu_bus", &baa, pmu_print); 997 } 998 999 static void 1000 pmu_attach_smart_battery(struct pmu_softc *sc, int num) 1001 { 1002 struct battery_attach_args baa; 1003 1004 baa.baa_type = BATTERY_TYPE_SMART; 1005 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1006 baa.baa_num = num; 1007 config_found_ia(&sc->sc_dev, "pmu_bus", &baa, pmu_print); 1008 } 1009
Indexes created Tue Sep 23 07:09:52 GMT 2025