pmu.c revision 1.6
1 /* $NetBSD: pmu.c,v 1.6 2007/05/09 00:09:28 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 1.6 2007/05/09 00:09:28 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 struct proc *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_create_thread(void *); 116 static void pmu_thread(void *); 117 static void pmu_eject_card(struct pmu_softc *, int); 118 static void pmu_update_brightness(struct pmu_softc *); 119 static void pmu_register_callback(void *, void (*)(void *), void *); 120 /* 121 * send a message to the PMU. 122 */ 123 static int pmu_send(void *, int, int, uint8_t *, int, uint8_t *); 124 static void pmu_adb_poll(void *); 125 static int pmu_todr_set(todr_chip_handle_t, volatile struct timeval *); 126 static int pmu_todr_get(todr_chip_handle_t, volatile struct timeval *); 127 128 static int pmu_adb_handler(void *, int, uint8_t *); 129 130 static struct pmu_softc *pmu0 = NULL; 131 132 /* ADB bus attachment stuff */ 133 static int pmu_adb_send(void *, int, int, int, uint8_t *); 134 static int pmu_adb_set_handler(void *, void (*)(void *, int, uint8_t *), void *); 135 136 /* i2c stuff */ 137 #if 0 138 static int pmu_i2c_acquire_bus(void *, int); 139 static void pmu_i2c_release_bus(void *, int); 140 static int pmu_i2c_exec(void *, i2c_op_t, i2c_addr_t, const void *, size_t, 141 void *, size_t, int); 142 #endif 143 144 static void pmu_attach_legacy_battery(struct pmu_softc *); 145 static void pmu_attach_smart_battery(struct pmu_softc *, int); 146 static int pmu_print(void *, const char *); 147 148 /* these values shows that number of data returned after 'send' cmd is sent */ 149 static signed char pm_send_cmd_type[] = { 150 -1, -1, -1, -1, -1, -1, -1, -1, 151 -1, -1, -1, -1, -1, -1, -1, -1, 152 0x01, 0x01, -1, -1, -1, -1, -1, -1, 153 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, 154 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 155 0x00, -1, -1, -1, -1, -1, -1, -1, 156 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 157 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 158 0x01, 0x01, -1, -1, -1, -1, -1, -1, 159 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 160 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 161 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 162 0x02, -1, -1, -1, -1, -1, -1, -1, 163 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 164 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 165 0x00, 0x00, -1, -1, -1, -1, 0x04, 0x04, 166 0x04, -1, 0x00, -1, -1, -1, -1, -1, 167 0x00, -1, -1, -1, -1, -1, -1, -1, 168 0x01, 0x02, -1, -1, -1, -1, -1, -1, 169 0x00, 0x00, -1, -1, -1, -1, -1, -1, 170 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 171 0x01, 0x01, 0x03, 0x02, -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 -1, -1, -1, -1, -1, -1, -1, -1, 176 0x00, -1, -1, -1, -1, -1, -1, -1, 177 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, 178 -1, 0x04, 0x00, -1, -1, -1, -1, -1, 179 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, 180 -1, -1, -1, -1, -1, -1, -1, -1, 181 -1, -1, -1, -1, -1, -1, -1, -1 182 }; 183 184 /* these values shows that number of data returned after 'receive' cmd is sent */ 185 static signed char pm_receive_cmd_type[] = { 186 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 187 -1, -1, -1, -1, -1, -1, -1, -1, 188 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 189 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 190 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 191 -1, -1, -1, -1, -1, -1, -1, -1, 192 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 193 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 194 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 195 0x02, 0x02, -1, -1, -1, -1, -1, -1, 196 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 197 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 198 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 199 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 200 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 201 -1, -1, -1, -1, -1, -1, 0x01, 0x01, 202 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 203 0x06, -1, -1, -1, -1, -1, -1, -1, 204 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 205 0x02, 0x02, -1, -1, -1, -1, -1, -1, 206 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 207 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1, 208 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 209 -1, -1, -1, -1, -1, -1, -1, -1, 210 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 211 -1, -1, -1, -1, -1, -1, -1, -1, 212 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 213 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 214 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 215 -1, -1, 0x02, -1, -1, -1, -1, 0x00, 216 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 217 -1, -1, -1, -1, -1, -1, -1, -1, 218 }; 219 220 static const char *has_legacy_battery[] = { 221 "AAPL,3500", 222 "AAPL,3400/2400", 223 NULL }; 224 225 static const char *has_two_smart_batteries[] = { 226 "AAPL,PowerBook1998", 227 "PowerBook1,1", 228 NULL }; 229 230 static int 231 pmu_match(struct device *parent, struct cfdata *cf, void *aux) 232 { 233 struct confargs *ca = aux; 234 235 if (ca->ca_nreg < 8) 236 return 0; 237 238 if (ca->ca_nintr < 4) 239 return 0; 240 241 if (strcmp(ca->ca_name, "via-pmu") == 0) { 242 return 10; 243 } 244 245 return 0; 246 } 247 248 static void 249 pmu_attach(struct device *parent, struct device *dev, void *aux) 250 { 251 struct confargs *ca = aux; 252 struct pmu_softc *sc = (struct pmu_softc *)dev; 253 #if notyet 254 struct i2cbus_attach_args iba; 255 #endif 256 uint32_t regs[16]; 257 int irq = ca->ca_intr[0]; 258 int node, extint_node, root_node; 259 int nbat = 1, i, pmnode; 260 uint8_t cmd[2] = {2, 0}; 261 uint8_t resp[16]; 262 char name[256]; 263 264 extint_node = getnodebyname(OF_parent(ca->ca_node), "extint-gpio1"); 265 if (extint_node) 266 OF_getprop(extint_node, "interrupts", &irq, 4); 267 268 printf(" irq %d: ", irq); 269 270 sc->sc_node = ca->ca_node; 271 sc->sc_memt = ca->ca_tag; 272 273 root_node = OF_finddevice("/"); 274 275 sc->sc_error = 0; 276 sc->sc_autopoll = 0; 277 sc->sc_pending_eject = 0; 278 sc->sc_brightness = sc->sc_brightness_wanted = 0x80; 279 sc->sc_volume = sc->sc_volume_wanted = 0x80; 280 sc->sc_flags = 0; 281 sc->sc_callback = NULL; 282 283 if (bus_space_map(sc->sc_memt, ca->ca_reg[0] + ca->ca_baseaddr, 284 ca->ca_reg[1], 0, &sc->sc_memh) != 0) { 285 286 printf("%s: unable to map registers\n", dev->dv_xname); 287 return; 288 } 289 sc->sc_ih = intr_establish(irq, IST_LEVEL, IPL_TTY, pmu_intr, sc); 290 291 pmu_init(sc); 292 293 sc->sc_pmu_ops.cookie = sc; 294 sc->sc_pmu_ops.do_command = pmu_send; 295 sc->sc_pmu_ops.register_callback = pmu_register_callback; 296 297 if (pmu0 == NULL) 298 pmu0 = sc; 299 300 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 301 302 /* check what kind of PMU we're talking to */ 303 if (pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp) > 1) 304 printf(" rev. %d", resp[1]); 305 printf("\n"); 306 307 node = OF_child(sc->sc_node); 308 309 while (node != 0) { 310 311 if (OF_getprop(node, "name", name, 256) == 0) 312 goto next; 313 314 if (strncmp(name, "pmu-i2c", 8) == 0) { 315 316 printf("%s: initializing IIC bus\n", 317 sc->sc_dev.dv_xname); 318 goto next; 319 } 320 if (strncmp(name, "adb", 4) == 0) { 321 322 printf("%s: initializing ADB\n", sc->sc_dev.dv_xname); 323 sc->sc_adbops.cookie = sc; 324 sc->sc_adbops.send = pmu_adb_send; 325 sc->sc_adbops.poll = pmu_adb_poll; 326 sc->sc_adbops.autopoll = pmu_autopoll; 327 sc->sc_adbops.set_handler = pmu_adb_set_handler; 328 #if NNADB > 0 329 config_found_ia(dev, "adb_bus", &sc->sc_adbops, 330 nadb_print); 331 #endif 332 goto next; 333 } 334 if (strncmp(name, "rtc", 4) == 0) { 335 336 printf("%s: initializing RTC\n", sc->sc_dev.dv_xname); 337 sc->sc_todr.todr_gettime = pmu_todr_get; 338 sc->sc_todr.todr_settime = pmu_todr_set; 339 sc->sc_todr.cookie = sc; 340 todr_attach(&sc->sc_todr); 341 goto next; 342 } 343 if (strncmp(name, "battery", 8) == 0) 344 goto next; 345 346 printf("%s: %s not configured\n", sc->sc_dev.dv_xname, name); 347 next: 348 node = OF_peer(node); 349 } 350 351 if (OF_finddevice("/bandit/ohare") != -1) { 352 printf("%s: enabling ohare backlight control\n", 353 device_xname(dev)); 354 sc->sc_flags |= PMU_HAS_BACKLIGHT_CONTROL; 355 } 356 357 /* attach batteries */ 358 if (of_compatible(root_node, has_legacy_battery) != -1) { 359 360 pmu_attach_legacy_battery(sc); 361 } else if (of_compatible(root_node, has_two_smart_batteries) != -1) { 362 363 pmu_attach_smart_battery(sc, 0); 364 pmu_attach_smart_battery(sc, 1); 365 } else { 366 367 /* check how many batteries we have */ 368 pmnode = getnodebyname(ca->ca_node, "power-mgt"); 369 if (pmnode == -1) 370 goto bat_done; 371 if (OF_getprop(pmnode, "prim-info", regs, sizeof(regs)) < 24) 372 goto bat_done; 373 nbat = regs[6] >> 16; 374 for (i = 0; i < nbat; i++) 375 pmu_attach_smart_battery(sc, i); 376 } 377 bat_done: 378 379 #if notyet 380 iba.iba_tag = &sc->sc_i2c; 381 sc->sc_i2c.ic_cookie = sc; 382 sc->sc_i2c.ic_acquire_bus = pmu_i2c_acquire_bus; 383 sc->sc_i2c.ic_release_bus = pmu_i2c_release_bus; 384 sc->sc_i2c.ic_send_start = NULL; 385 sc->sc_i2c.ic_send_stop = NULL; 386 sc->sc_i2c.ic_initiate_xfer = NULL; 387 sc->sc_i2c.ic_read_byte = NULL; 388 sc->sc_i2c.ic_write_byte = NULL; 389 sc->sc_i2c.ic_exec = pmu_i2c_exec; 390 config_found_ia(&sc->sc_dev, "i2cbus", &iba, iicbus_print); 391 #endif 392 kthread_create(pmu_create_thread, sc); 393 } 394 395 static void 396 pmu_register_callback(void *pmu_cookie, void (*cb)(void *), void *cookie) 397 { 398 struct pmu_softc *sc = pmu_cookie; 399 400 sc->sc_callback = cb; 401 sc->sc_cb_cookie = cookie; 402 } 403 404 static void 405 pmu_init(struct pmu_softc *sc) 406 { 407 uint8_t pmu_imask, resp[16]; 408 409 pmu_imask = 410 PMU_INT_PCEJECT | PMU_INT_SNDBRT | PMU_INT_ADB/* | PMU_INT_TICK*/; 411 pmu_imask |= PMU_INT_BATTERY; 412 pmu_imask |= PMU_INT_ENVIRONMENT; 413 pmu_send(sc, PMU_SET_IMASK, 1, &pmu_imask, 16, resp); 414 415 pmu_write_reg(sc, vIER, 0x90); /* enable VIA interrupts */ 416 } 417 418 static inline void 419 pmu_write_reg(struct pmu_softc *sc, int offset, uint8_t value) 420 { 421 422 bus_space_write_1(sc->sc_memt, sc->sc_memh, offset, value); 423 } 424 425 static inline uint8_t 426 pmu_read_reg(struct pmu_softc *sc, int offset) 427 { 428 429 return bus_space_read_1(sc->sc_memt, sc->sc_memh, offset); 430 } 431 432 static inline int 433 pmu_send_byte(struct pmu_softc *sc, uint8_t data) 434 { 435 436 pmu_out(sc); 437 pmu_write_reg(sc, vSR, data); 438 pmu_ack_off(sc); 439 /* wait for intr to come up */ 440 /* XXX should add a timeout and bail if it expires */ 441 do {} while (pmu_intr_state(sc) == 0); 442 pmu_ack_on(sc); 443 do {} while (pmu_intr_state(sc)); 444 pmu_ack_on(sc); 445 DPRINTF(" %02x>", data); 446 return 0; 447 } 448 449 static inline int 450 pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 451 { 452 volatile uint8_t scratch; 453 pmu_in(sc); 454 scratch = pmu_read_reg(sc, vSR); 455 pmu_ack_off(sc); 456 /* wait for intr to come up */ 457 do {} while (pmu_intr_state(sc) == 0); 458 pmu_ack_on(sc); 459 do {} while (pmu_intr_state(sc)); 460 *data = pmu_read_reg(sc, vSR); 461 DPRINTF(" <%02x", *data); 462 return 0; 463 } 464 465 static int 466 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 467 uint8_t *out_msg) 468 { 469 struct pmu_softc *sc = cookie; 470 int i, rcv_len = -1, s; 471 uint8_t out_len, intreg; 472 473 DPRINTF("pmu_send: "); 474 475 s = splhigh(); 476 intreg = pmu_read_reg(sc, vIER); 477 intreg &= 0x10; 478 pmu_write_reg(sc, vIER, intreg); 479 480 /* wait idle */ 481 do {} while (pmu_intr_state(sc)); 482 sc->sc_error = 0; 483 484 /* send command */ 485 pmu_send_byte(sc, cmd); 486 487 /* send length if necessary */ 488 if (pm_send_cmd_type[cmd] < 0) { 489 pmu_send_byte(sc, length); 490 } 491 492 for (i = 0; i < length; i++) { 493 pmu_send_byte(sc, in_msg[i]); 494 DPRINTF(" next "); 495 } 496 DPRINTF("done sending\n"); 497 498 /* see if there's data to read */ 499 rcv_len = pm_receive_cmd_type[cmd]; 500 if (rcv_len == 0) 501 goto done; 502 503 /* read command */ 504 if (rcv_len == 1) { 505 pmu_read_byte(sc, out_msg); 506 goto done; 507 } else 508 out_msg[0] = cmd; 509 if (rcv_len < 0) { 510 pmu_read_byte(sc, &out_len); 511 rcv_len = out_len + 1; 512 } 513 for (i = 1; i < min(rcv_len, rlen); i++) 514 pmu_read_byte(sc, &out_msg[i]); 515 516 done: 517 DPRINTF("\n"); 518 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 519 splx(s); 520 521 return rcv_len; 522 } 523 524 static void 525 pmu_adb_poll(void *cookie) 526 { 527 struct pmu_softc *sc = cookie; 528 529 pmu_intr(sc); 530 } 531 532 static void 533 pmu_in(struct pmu_softc *sc) 534 { 535 uint8_t reg; 536 537 reg = pmu_read_reg(sc, vACR); 538 reg &= ~vSR_OUT; 539 reg |= 0x0c; 540 pmu_write_reg(sc, vACR, reg); 541 } 542 543 static void 544 pmu_out(struct pmu_softc *sc) 545 { 546 uint8_t reg; 547 548 reg = pmu_read_reg(sc, vACR); 549 reg |= vSR_OUT; 550 reg |= 0x0c; 551 pmu_write_reg(sc, vACR, reg); 552 } 553 554 static void 555 pmu_ack_off(struct pmu_softc *sc) 556 { 557 uint8_t reg; 558 559 reg = pmu_read_reg(sc, vBufB); 560 reg &= ~vPB4; 561 pmu_write_reg(sc, vBufB, reg); 562 } 563 564 static void 565 pmu_ack_on(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 int 575 pmu_intr_state(struct pmu_softc *sc) 576 { 577 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 578 } 579 580 static int 581 pmu_intr(void *arg) 582 { 583 struct pmu_softc *sc = arg; 584 unsigned int s, len, i; 585 uint8_t resp[16]; 586 587 s = splhigh(); /* can't be too careful - might be called */ 588 /* from a routine, NOT an interrupt */ 589 590 DPRINTF(":"); 591 592 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 593 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 594 if ((len < 1) || (resp[1] == 0)) 595 goto done; 596 #ifdef PMU_DEBUG 597 { 598 DPRINTF("intr: %02x", resp[0]); 599 for (i = 1; i < len; i++) 600 DPRINTF(" %02x", resp[i]); 601 DPRINTF("\n"); 602 } 603 #endif 604 if (resp[1] & PMU_INT_ADB) { 605 pmu_adb_handler(sc, len - 1, &resp[1]); 606 goto done; 607 } 608 if (resp[1] & PMU_INT_SNDBRT) { 609 /* deal with the brightness / volume control buttons */ 610 DPRINTF("brightness: %d volume %d\n", resp[2], resp[3]); 611 sc->sc_brightness_wanted = resp[2]; 612 sc->sc_volume_wanted = resp[3]; 613 wakeup(&sc->sc_event); 614 goto done; 615 } 616 if (resp[1] & PMU_INT_PCEJECT) { 617 /* deal with PCMCIA eject buttons */ 618 DPRINTF("card eject %d\n", resp[3]); 619 sc->sc_pending_eject |= (resp[3] & 3); 620 wakeup(&sc->sc_event); 621 goto done; 622 } 623 if (resp[1] & PMU_INT_BATTERY) { 624 /* deal with battery messages */ 625 printf("battery:"); 626 for (i = 2; i < len; i++) 627 printf(" %02x", resp[i]); 628 printf("\n"); 629 goto done; 630 } 631 if (resp[1] & PMU_INT_ENVIRONMENT) { 632 #ifdef PMU_VERBOSE 633 /* deal with environment messages */ 634 printf("environment:"); 635 for (i = 2; i < len; i++) 636 printf(" %02x", resp[i]); 637 printf("\n"); 638 #endif 639 goto done; 640 } 641 if (resp[1] & PMU_INT_TICK) { 642 /* don't bother */ 643 goto done; 644 } 645 646 /* unknown interrupt code?! */ 647 #ifdef PMU_DEBUG 648 printf("pmu intr: %02x:", resp[1]); 649 for (i = 2; i < len; i++) 650 printf(" %02x", resp[i]); 651 printf("\n"); 652 #endif 653 done: 654 splx(s); 655 return 1; 656 } 657 658 #if 0 659 static int 660 pmu_error_handler(void *cookie, int len, uint8_t *data) 661 { 662 struct pmu_softc *sc = cookie; 663 664 /* 665 * something went wrong 666 * byte 3 seems to be the failed command 667 */ 668 sc->sc_error = 1; 669 wakeup(&sc->sc_todev); 670 return 0; 671 } 672 #endif 673 #define DIFF19041970 2082844800 674 675 static int 676 pmu_todr_get(todr_chip_handle_t tch, volatile struct timeval *tvp) 677 { 678 struct pmu_softc *sc = tch->cookie; 679 uint32_t sec; 680 uint8_t resp[16]; 681 682 DPRINTF("pmu_todr_get\n"); 683 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 684 685 memcpy(&sec, &resp[1], 4); 686 tvp->tv_sec = sec - DIFF19041970; 687 DPRINTF("tod: %ld\n", tvp->tv_sec); 688 tvp->tv_usec = 0; 689 return 0; 690 } 691 692 static int 693 pmu_todr_set(todr_chip_handle_t tch, volatile struct timeval *tvp) 694 { 695 struct pmu_softc *sc = tch->cookie; 696 uint32_t sec; 697 uint8_t resp[16]; 698 699 sec = tvp->tv_sec + DIFF19041970; 700 if (pmu_send(sc, PMU_SET_RTC, 4, (uint8_t *)&sec, 16, resp) >= 0) 701 return 0; 702 return -1; 703 } 704 705 void 706 pmu_poweroff() 707 { 708 struct pmu_softc *sc; 709 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 710 uint8_t resp[16]; 711 712 if (pmu0 == NULL) 713 return; 714 sc = pmu0; 715 if (pmu_send(sc, PMU_POWER_OFF, 4, cmd, 16, resp) >= 0) 716 while (1); 717 } 718 719 void 720 pmu_restart() 721 { 722 struct pmu_softc *sc; 723 uint8_t resp[16]; 724 725 if (pmu0 == NULL) 726 return; 727 sc = pmu0; 728 if (pmu_send(sc, PMU_RESET_CPU, 0, NULL, 16, resp) >= 0) 729 while (1); 730 } 731 732 static void 733 pmu_autopoll(void *cookie, int flag) 734 { 735 struct pmu_softc *sc = cookie; 736 /* magical incantation to re-enable autopolling */ 737 uint8_t cmd[] = {0, 0x86, (flag >> 8) & 0xff, flag & 0xff}; 738 uint8_t resp[16]; 739 740 if (sc->sc_autopoll == flag) 741 return; 742 743 if (flag) { 744 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 745 } else { 746 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 747 } 748 sc->sc_autopoll = flag & 0xffff; 749 } 750 751 static int 752 pmu_adb_handler(void *cookie, int len, uint8_t *data) 753 { 754 struct pmu_softc *sc = cookie; 755 uint8_t resp[16]; 756 757 if (sc->sc_adb_handler != NULL) { 758 sc->sc_adb_handler(sc->sc_adb_cookie, len, data); 759 /* 760 * the PMU will turn off autopolling after each LISTEN so we 761 * need to re-enable it here whenever we receive an ACK for a 762 * LISTEN command 763 */ 764 if ((data[1] & 0x0c) == 0x08) { 765 uint8_t cmd[] = {0, 0x86, (sc->sc_autopoll >> 8) & 0xff, 766 sc->sc_autopoll & 0xff}; 767 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 768 } 769 return 0; 770 } 771 return -1; 772 } 773 774 static int 775 pmu_adb_send(void *cookie, int poll, int command, int len, uint8_t *data) 776 { 777 struct pmu_softc *sc = cookie; 778 int i, replen; 779 uint8_t packet[16], resp[16]; 780 781 /* construct an ADB command packet and send it */ 782 packet[0] = command; 783 packet[1] = 0; 784 packet[2] = len; 785 for (i = 0; i < len; i++) 786 packet[i + 3] = data[i]; 787 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 788 789 return 0; 790 } 791 792 static int 793 pmu_adb_set_handler(void *cookie, void (*handler)(void *, int, uint8_t *), 794 void *hcookie) 795 { 796 struct pmu_softc *sc = cookie; 797 798 /* register a callback for incoming ADB messages */ 799 sc->sc_adb_handler = handler; 800 sc->sc_adb_cookie = hcookie; 801 return 0; 802 } 803 #if 0 804 static int 805 pmu_i2c_acquire_bus(void *cookie, int flags) 806 { 807 /* nothing yet */ 808 return 0; 809 } 810 811 static void 812 pmu_i2c_release_bus(void *cookie, int flags) 813 { 814 /* nothing here either */ 815 } 816 817 static int 818 pmu_i2c_exec(void *cookie, i2c_op_t op, i2c_addr_t addr, const void *_send, 819 size_t send_len, void *_recv, size_t recv_len, int flags) 820 { 821 #if 0 822 struct pmu_softc *sc = cookie; 823 const uint8_t *send = _send; 824 uint8_t *recv = _recv; 825 uint8_t command[16] = {PMU_POWERMGR, PMGR_IIC}; 826 827 DPRINTF("pmu_i2c_exec(%02x)\n", addr); 828 command[2] = addr; 829 830 memcpy(&command[3], send, min((int)send_len, 12)); 831 832 sc->sc_iic_done = 0; 833 pmu_send(sc, sc->sc_polling, send_len + 3, command); 834 835 while ((sc->sc_iic_done == 0) && (sc->sc_error == 0)) { 836 if (sc->sc_polling) { 837 pmu_poll(sc); 838 } else 839 tsleep(&sc->sc_todev, 0, "i2c", 1000); 840 } 841 842 if (sc->sc_error) { 843 sc->sc_error = 0; 844 return -1; 845 } 846 847 /* see if we're supposed to do a read */ 848 if (recv_len > 0) { 849 sc->sc_iic_done = 0; 850 command[2] |= 1; 851 command[3] = 0; 852 853 /* 854 * XXX we need to do something to limit the size of the answer 855 * - apparently the chip keeps sending until we tell it to stop 856 */ 857 pmu_send(sc, sc->sc_polling, 3, command); 858 while ((sc->sc_iic_done == 0) && (sc->sc_error == 0)) { 859 if (sc->sc_polling) { 860 pmu_poll(sc); 861 } else 862 tsleep(&sc->sc_todev, 0, "i2c", 1000); 863 } 864 865 if (sc->sc_error) { 866 printf("error trying to read\n"); 867 sc->sc_error = 0; 868 return -1; 869 } 870 } 871 872 if ((sc->sc_iic_done > 3) && (recv_len > 0)) { 873 /* we got an answer */ 874 recv[0] = sc->sc_iic_val; 875 printf("ret: %02x\n", sc->sc_iic_val); 876 return 1; 877 } 878 #endif 879 return 0; 880 } 881 #endif 882 883 static void 884 pmu_eject_card(struct pmu_softc *sc, int socket) 885 { 886 int s; 887 uint8_t buf[] = {socket | 4}; 888 uint8_t res[4]; 889 890 s = splhigh(); 891 sc->sc_pending_eject &= ~socket; 892 splx(s); 893 pmu_send(sc, PMU_EJECT_PCMCIA, 1, buf, 4, res); 894 } 895 896 static void 897 pmu_update_brightness(struct pmu_softc *sc) 898 { 899 int val; 900 uint8_t cmd[2], resp[16]; 901 902 if (sc->sc_brightness == sc->sc_brightness_wanted) 903 return; 904 905 if ((sc->sc_flags & PMU_HAS_BACKLIGHT_CONTROL) == 0) { 906 907 printf("%s: this PMU doesn't support backlight control\n", 908 sc->sc_dev.dv_xname); 909 sc->sc_brightness = sc->sc_brightness_wanted; 910 return; 911 } 912 913 if (sc->sc_brightness_wanted == 0) { 914 915 /* turn backlight off completely */ 916 cmd[0] = PMU_POW_OFF | PMU_POW_BACKLIGHT; 917 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 918 sc->sc_brightness = sc->sc_brightness_wanted; 919 920 /* don't bother with brightness */ 921 return; 922 } 923 924 /* turn backlight on if needed */ 925 if (sc->sc_brightness == 0) { 926 cmd[0] = PMU_POW_ON | PMU_POW_BACKLIGHT; 927 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 928 } 929 930 DPRINTF("pmu_update_brightness: %d -> %d\n", sc->sc_brightness, 931 sc->sc_brightness_wanted); 932 933 val = 0x7f - (sc->sc_brightness_wanted >> 1); 934 if (val < 0x08) 935 val = 0x08; 936 if (val > 0x78) 937 val = 0x78; 938 cmd[0] = val; 939 pmu_send(sc, PMU_SET_BRIGHTNESS, 1, cmd, 16, resp); 940 941 sc->sc_brightness = sc->sc_brightness_wanted; 942 } 943 944 static void 945 pmu_create_thread(void *cookie) 946 { 947 struct pmu_softc *sc = cookie; 948 949 if (kthread_create1(pmu_thread, sc, &sc->sc_thread, "%s", 950 "pmu") != 0) { 951 printf("pmu: unable to create event kthread"); 952 } 953 } 954 955 static void 956 pmu_thread(void *cookie) 957 { 958 struct pmu_softc *sc = cookie; 959 //time_t time_bat = time_second; 960 int ticks = hz, i; 961 962 while (1) { 963 tsleep(&sc->sc_event, PWAIT, "wait", ticks); 964 if (sc->sc_pending_eject != 0) { 965 DPRINTF("eject %d\n", sc->sc_pending_eject); 966 for (i = 1; i < 3; i++) { 967 if (i & sc->sc_pending_eject) 968 pmu_eject_card(sc, i); 969 } 970 } 971 #if NLWPM > 0 972 lwpm_poll(); 973 #endif 974 /* see if we need to update brightness */ 975 if (sc->sc_brightness_wanted != sc->sc_brightness) { 976 pmu_update_brightness(sc); 977 } 978 979 /* see if we need to update audio volume */ 980 if (sc->sc_volume_wanted != sc->sc_volume) { 981 //set_volume(sc->sc_volume_wanted); 982 sc->sc_volume = sc->sc_volume_wanted; 983 } 984 985 if (sc->sc_callback != NULL) 986 sc->sc_callback(sc->sc_cb_cookie); 987 } 988 } 989 990 static int 991 pmu_print(void *aux, const char *what) 992 { 993 994 return 0; 995 } 996 997 static void 998 pmu_attach_legacy_battery(struct pmu_softc *sc) 999 { 1000 struct battery_attach_args baa; 1001 1002 baa.baa_type = BATTERY_TYPE_LEGACY; 1003 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1004 config_found_ia(&sc->sc_dev, "pmu_bus", &baa, pmu_print); 1005 } 1006 1007 static void 1008 pmu_attach_smart_battery(struct pmu_softc *sc, int num) 1009 { 1010 struct battery_attach_args baa; 1011 1012 baa.baa_type = BATTERY_TYPE_SMART; 1013 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1014 baa.baa_num = num; 1015 config_found_ia(&sc->sc_dev, "pmu_bus", &baa, pmu_print); 1016 } 1017
Indexes created Tue Sep 23 07:09:52 GMT 2025