1 /* $NetBSD: pmu.c,v 1.23 2014/03/14 21:59:41 mrg 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: pmu.c,v 1.23 2014/03/14 21:59:41 mrg Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/device.h> 36 #include <sys/proc.h> 37 #include <sys/kthread.h> 38 39 #include <sys/bus.h> 40 #include <machine/pio.h> 41 #include <machine/autoconf.h> 42 #include <dev/clock_subr.h> 43 #include <dev/i2c/i2cvar.h> 44 45 #include <dev/sysmon/sysmonvar.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(device_t, device_t, void *); 68 static int pmu_match(device_t, cfdata_t, void *); 69 static void pmu_autopoll(void *, int); 70 71 static int pmu_intr(void *); 72 73 struct pmu_softc { 74 device_t 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 pmu_ops sc_pmu_ops; 80 struct sysmon_pswitch sc_lidswitch; 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 int sc_lid_closed; 93 /* deferred processing */ 94 lwp_t *sc_thread; 95 /* signalling the event thread */ 96 int sc_event; 97 /* ADB */ 98 void (*sc_adb_handler)(void *, int, uint8_t *); 99 void *sc_adb_cookie; 100 void (*sc_callback)(void *); 101 void *sc_cb_cookie; 102 }; 103 104 CFATTACH_DECL_NEW(pmu, sizeof(struct pmu_softc), 105 pmu_match, pmu_attach, NULL, NULL); 106 107 static inline void pmu_write_reg(struct pmu_softc *, int, uint8_t); 108 static inline uint8_t pmu_read_reg(struct pmu_softc *, int); 109 static void pmu_in(struct pmu_softc *); 110 static void pmu_out(struct pmu_softc *); 111 static void pmu_ack_off(struct pmu_softc *); 112 static void pmu_ack_on(struct pmu_softc *); 113 static int pmu_intr_state(struct pmu_softc *); 114 115 static void pmu_init(struct pmu_softc *); 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, struct timeval *); 126 static int pmu_todr_get(todr_chip_handle_t, 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(device_t parent, cfdata_t 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(device_t parent, device_t self, void *aux) 250 { 251 struct confargs *ca = aux; 252 struct pmu_softc *sc = device_private(self); 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 int type = IST_EDGE; 261 uint8_t cmd[2] = {2, 0}; 262 uint8_t resp[16]; 263 char name[256]; 264 265 extint_node = of_getnode_byname(OF_parent(ca->ca_node), "extint-gpio1"); 266 if (extint_node) { 267 268 OF_getprop(extint_node, "interrupts", &irq, 4); 269 type = IST_LEVEL; 270 } 271 272 aprint_normal(" irq %d: ", irq); 273 274 sc->sc_dev = self; 275 sc->sc_node = ca->ca_node; 276 sc->sc_memt = ca->ca_tag; 277 278 root_node = OF_finddevice("/"); 279 280 sc->sc_error = 0; 281 sc->sc_autopoll = 0; 282 sc->sc_pending_eject = 0; 283 sc->sc_brightness = sc->sc_brightness_wanted = 0x80; 284 sc->sc_volume = sc->sc_volume_wanted = 0x80; 285 sc->sc_flags = 0; 286 sc->sc_callback = NULL; 287 sc->sc_lid_closed = 0; 288 289 if (bus_space_map(sc->sc_memt, ca->ca_reg[0] + ca->ca_baseaddr, 290 ca->ca_reg[1], 0, &sc->sc_memh) != 0) { 291 aprint_error_dev(self, "unable to map registers\n"); 292 return; 293 } 294 sc->sc_ih = intr_establish(irq, type, IPL_TTY, pmu_intr, sc); 295 296 pmu_init(sc); 297 298 sc->sc_pmu_ops.cookie = sc; 299 sc->sc_pmu_ops.do_command = pmu_send; 300 sc->sc_pmu_ops.register_callback = pmu_register_callback; 301 302 if (pmu0 == NULL) 303 pmu0 = sc; 304 305 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 306 307 /* check what kind of PMU we're talking to */ 308 if (pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp) > 1) 309 aprint_normal(" rev. %d", resp[1]); 310 aprint_normal("\n"); 311 312 node = OF_child(sc->sc_node); 313 314 while (node != 0) { 315 316 if (OF_getprop(node, "name", name, 256) == 0) 317 goto next; 318 319 if (strncmp(name, "pmu-i2c", 8) == 0) { 320 aprint_normal_dev(self, "initializing IIC bus\n"); 321 goto next; 322 } 323 if (strncmp(name, "adb", 4) == 0) { 324 aprint_normal_dev(self, "initializing ADB\n"); 325 sc->sc_adbops.cookie = sc; 326 sc->sc_adbops.send = pmu_adb_send; 327 sc->sc_adbops.poll = pmu_adb_poll; 328 sc->sc_adbops.autopoll = pmu_autopoll; 329 sc->sc_adbops.set_handler = pmu_adb_set_handler; 330 #if NNADB > 0 331 config_found_ia(self, "adb_bus", &sc->sc_adbops, 332 nadb_print); 333 #endif 334 goto next; 335 } 336 if (strncmp(name, "rtc", 4) == 0) { 337 338 aprint_normal_dev(self, "initializing RTC\n"); 339 sc->sc_todr.todr_gettime = pmu_todr_get; 340 sc->sc_todr.todr_settime = pmu_todr_set; 341 sc->sc_todr.cookie = sc; 342 todr_attach(&sc->sc_todr); 343 goto next; 344 } 345 if (strncmp(name, "battery", 8) == 0) 346 goto next; 347 348 aprint_normal_dev(self, "%s not configured\n", name); 349 next: 350 node = OF_peer(node); 351 } 352 353 if (OF_finddevice("/bandit/ohare") != -1) { 354 aprint_normal_dev(self, "enabling ohare backlight control\n"); 355 sc->sc_flags |= PMU_HAS_BACKLIGHT_CONTROL; 356 cmd[0] = 0; 357 cmd[1] = 0; 358 memset(resp, 0, 6); 359 if (pmu_send(sc, PMU_READ_BRIGHTNESS, 1, cmd, 16, resp) > 1) { 360 sc->sc_brightness_wanted = resp[1]; 361 pmu_update_brightness(sc); 362 } 363 } 364 365 /* attach batteries */ 366 if (of_compatible(root_node, has_legacy_battery) != -1) { 367 368 pmu_attach_legacy_battery(sc); 369 } else if (of_compatible(root_node, has_two_smart_batteries) != -1) { 370 371 pmu_attach_smart_battery(sc, 0); 372 pmu_attach_smart_battery(sc, 1); 373 } else { 374 375 /* check how many batteries we have */ 376 pmnode = of_getnode_byname(ca->ca_node, "power-mgt"); 377 if (pmnode == -1) 378 goto bat_done; 379 if (OF_getprop(pmnode, "prim-info", regs, sizeof(regs)) < 24) 380 goto bat_done; 381 nbat = regs[6] >> 16; 382 for (i = 0; i < nbat; i++) 383 pmu_attach_smart_battery(sc, i); 384 } 385 bat_done: 386 387 #if notyet 388 iba.iba_tag = &sc->sc_i2c; 389 sc->sc_i2c.ic_cookie = sc; 390 sc->sc_i2c.ic_acquire_bus = pmu_i2c_acquire_bus; 391 sc->sc_i2c.ic_release_bus = pmu_i2c_release_bus; 392 sc->sc_i2c.ic_send_start = NULL; 393 sc->sc_i2c.ic_send_stop = NULL; 394 sc->sc_i2c.ic_initiate_xfer = NULL; 395 sc->sc_i2c.ic_read_byte = NULL; 396 sc->sc_i2c.ic_write_byte = NULL; 397 sc->sc_i2c.ic_exec = pmu_i2c_exec; 398 config_found_ia(sc->sc_dev, "i2cbus", &iba, iicbus_print); 399 #endif 400 401 if (kthread_create(PRI_NONE, 0, NULL, pmu_thread, sc, &sc->sc_thread, 402 "%s", "pmu") != 0) { 403 aprint_error_dev(self, "unable to create event kthread\n"); 404 } 405 406 sc->sc_lidswitch.smpsw_name = "Lid switch"; 407 sc->sc_lidswitch.smpsw_type = PSWITCH_TYPE_LID; 408 if (sysmon_pswitch_register(&sc->sc_lidswitch) != 0) 409 aprint_error_dev(self, 410 "unable to register lid switch with sysmon\n"); 411 } 412 413 static void 414 pmu_register_callback(void *pmu_cookie, void (*cb)(void *), void *cookie) 415 { 416 struct pmu_softc *sc = pmu_cookie; 417 418 sc->sc_callback = cb; 419 sc->sc_cb_cookie = cookie; 420 } 421 422 static void 423 pmu_init(struct pmu_softc *sc) 424 { 425 uint8_t pmu_imask, resp[16]; 426 427 pmu_imask = 428 PMU_INT_PCEJECT | PMU_INT_SNDBRT | PMU_INT_ADB/* | PMU_INT_TICK*/; 429 pmu_imask |= PMU_INT_BATTERY; 430 pmu_imask |= PMU_INT_ENVIRONMENT; 431 pmu_send(sc, PMU_SET_IMASK, 1, &pmu_imask, 16, resp); 432 433 pmu_write_reg(sc, vIER, 0x90); /* enable VIA interrupts */ 434 } 435 436 static inline void 437 pmu_write_reg(struct pmu_softc *sc, int offset, uint8_t value) 438 { 439 440 bus_space_write_1(sc->sc_memt, sc->sc_memh, offset, value); 441 } 442 443 static inline uint8_t 444 pmu_read_reg(struct pmu_softc *sc, int offset) 445 { 446 447 return bus_space_read_1(sc->sc_memt, sc->sc_memh, offset); 448 } 449 450 static inline int 451 pmu_send_byte(struct pmu_softc *sc, uint8_t data) 452 { 453 454 pmu_out(sc); 455 pmu_write_reg(sc, vSR, data); 456 pmu_ack_off(sc); 457 /* wait for intr to come up */ 458 /* XXX should add a timeout and bail if it expires */ 459 do {} while (pmu_intr_state(sc) == 0); 460 pmu_ack_on(sc); 461 do {} while (pmu_intr_state(sc)); 462 pmu_ack_on(sc); 463 DPRINTF(" %02x>", data); 464 return 0; 465 } 466 467 static inline int 468 pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 469 { 470 pmu_in(sc); 471 (void)pmu_read_reg(sc, vSR); 472 pmu_ack_off(sc); 473 /* wait for intr to come up */ 474 do {} while (pmu_intr_state(sc) == 0); 475 pmu_ack_on(sc); 476 do {} while (pmu_intr_state(sc)); 477 *data = pmu_read_reg(sc, vSR); 478 DPRINTF(" <%02x", *data); 479 return 0; 480 } 481 482 static int 483 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 484 uint8_t *out_msg) 485 { 486 struct pmu_softc *sc = cookie; 487 int i, rcv_len = -1, s; 488 uint8_t out_len, intreg; 489 490 DPRINTF("pmu_send: "); 491 492 s = splhigh(); 493 intreg = pmu_read_reg(sc, vIER); 494 intreg &= 0x10; 495 pmu_write_reg(sc, vIER, intreg); 496 497 /* wait idle */ 498 do {} while (pmu_intr_state(sc)); 499 sc->sc_error = 0; 500 501 /* send command */ 502 pmu_send_byte(sc, cmd); 503 504 /* send length if necessary */ 505 if (pm_send_cmd_type[cmd] < 0) { 506 pmu_send_byte(sc, length); 507 } 508 509 for (i = 0; i < length; i++) { 510 pmu_send_byte(sc, in_msg[i]); 511 DPRINTF(" next "); 512 } 513 DPRINTF("done sending\n"); 514 515 /* see if there's data to read */ 516 rcv_len = pm_receive_cmd_type[cmd]; 517 if (rcv_len == 0) 518 goto done; 519 520 /* read command */ 521 if (rcv_len == 1) { 522 pmu_read_byte(sc, out_msg); 523 goto done; 524 } else 525 out_msg[0] = cmd; 526 if (rcv_len < 0) { 527 pmu_read_byte(sc, &out_len); 528 rcv_len = out_len + 1; 529 } 530 for (i = 1; i < min(rcv_len, rlen); i++) 531 pmu_read_byte(sc, &out_msg[i]); 532 533 done: 534 DPRINTF("\n"); 535 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 536 splx(s); 537 538 return rcv_len; 539 } 540 541 static void 542 pmu_adb_poll(void *cookie) 543 { 544 struct pmu_softc *sc = cookie; 545 int s; 546 547 s = spltty(); 548 pmu_intr(sc); 549 splx(s); 550 } 551 552 static void 553 pmu_in(struct pmu_softc *sc) 554 { 555 uint8_t reg; 556 557 reg = pmu_read_reg(sc, vACR); 558 reg &= ~vSR_OUT; 559 reg |= 0x0c; 560 pmu_write_reg(sc, vACR, reg); 561 } 562 563 static void 564 pmu_out(struct pmu_softc *sc) 565 { 566 uint8_t reg; 567 568 reg = pmu_read_reg(sc, vACR); 569 reg |= vSR_OUT; 570 reg |= 0x0c; 571 pmu_write_reg(sc, vACR, reg); 572 } 573 574 static void 575 pmu_ack_off(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 void 585 pmu_ack_on(struct pmu_softc *sc) 586 { 587 uint8_t reg; 588 589 reg = pmu_read_reg(sc, vBufB); 590 reg |= vPB4; 591 pmu_write_reg(sc, vBufB, reg); 592 } 593 594 static int 595 pmu_intr_state(struct pmu_softc *sc) 596 { 597 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 598 } 599 600 static int 601 pmu_intr(void *arg) 602 { 603 struct pmu_softc *sc = arg; 604 unsigned int len, i; 605 uint8_t resp[16]; 606 607 DPRINTF(":"); 608 609 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 610 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 611 if ((len < 1) || (resp[1] == 0)) 612 goto done; 613 #ifdef PMU_DEBUG 614 { 615 DPRINTF("intr: %02x", resp[0]); 616 for (i = 1; i < len; i++) 617 DPRINTF(" %02x", resp[i]); 618 DPRINTF("\n"); 619 } 620 #endif 621 if (resp[1] & PMU_INT_ADB) { 622 pmu_adb_handler(sc, len - 1, &resp[1]); 623 goto done; 624 } 625 if (resp[1] & PMU_INT_SNDBRT) { 626 /* deal with the brightness / volume control buttons */ 627 DPRINTF("brightness: %d volume %d\n", resp[2], resp[3]); 628 sc->sc_brightness_wanted = resp[2]; 629 sc->sc_volume_wanted = resp[3]; 630 wakeup(&sc->sc_event); 631 goto done; 632 } 633 if (resp[1] & PMU_INT_PCEJECT) { 634 /* deal with PCMCIA eject buttons */ 635 DPRINTF("card eject %d\n", resp[3]); 636 sc->sc_pending_eject |= (resp[3] & 3); 637 wakeup(&sc->sc_event); 638 goto done; 639 } 640 if (resp[1] & PMU_INT_BATTERY) { 641 /* deal with battery messages */ 642 printf("battery:"); 643 for (i = 2; i < len; i++) 644 printf(" %02x", resp[i]); 645 printf("\n"); 646 goto done; 647 } 648 if (resp[1] & PMU_INT_ENVIRONMENT) { 649 int closed; 650 #ifdef PMU_VERBOSE 651 /* deal with environment messages */ 652 printf("environment:"); 653 for (i = 2; i < len; i++) 654 printf(" %02x", resp[i]); 655 printf("\n"); 656 #endif 657 closed = (resp[2] & PMU_ENV_LID_CLOSED) != 0; 658 if (closed != sc->sc_lid_closed) { 659 sc->sc_lid_closed = closed; 660 sysmon_pswitch_event(&sc->sc_lidswitch, 661 closed ? PSWITCH_EVENT_PRESSED : 662 PSWITCH_EVENT_RELEASED); 663 } 664 goto done; 665 } 666 if (resp[1] & PMU_INT_TICK) { 667 /* don't bother */ 668 goto done; 669 } 670 671 /* unknown interrupt code?! */ 672 #ifdef PMU_DEBUG 673 printf("pmu intr: %02x:", resp[1]); 674 for (i = 2; i < len; i++) 675 printf(" %02x", resp[i]); 676 printf("\n"); 677 #endif 678 done: 679 return 1; 680 } 681 682 #if 0 683 static int 684 pmu_error_handler(void *cookie, int len, uint8_t *data) 685 { 686 struct pmu_softc *sc = cookie; 687 688 /* 689 * something went wrong 690 * byte 3 seems to be the failed command 691 */ 692 sc->sc_error = 1; 693 wakeup(&sc->sc_todev); 694 return 0; 695 } 696 #endif 697 #define DIFF19041970 2082844800 698 699 static int 700 pmu_todr_get(todr_chip_handle_t tch, struct timeval *tvp) 701 { 702 struct pmu_softc *sc = tch->cookie; 703 uint32_t sec; 704 int count = 10; 705 int ok = FALSE; 706 uint8_t resp[16]; 707 708 DPRINTF("pmu_todr_get\n"); 709 while ((count > 0) && (!ok)) { 710 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 711 712 memcpy(&sec, &resp[1], 4); 713 tvp->tv_sec = sec - DIFF19041970; 714 ok = (sec > DIFF19041970) && (sec < 0xf0000000); 715 if (!ok) aprint_error_dev(sc->sc_dev, 716 "got garbage from rtc (%08x)\n", sec); 717 count--; 718 } 719 if (count == 0) { 720 aprint_error_dev(sc->sc_dev, 721 "unable to get a sane time value\n"); 722 tvp->tv_sec = 0; 723 } 724 DPRINTF("tod: %" PRIo64 "\n", tvp->tv_sec); 725 tvp->tv_usec = 0; 726 return 0; 727 } 728 729 static int 730 pmu_todr_set(todr_chip_handle_t tch, struct timeval *tvp) 731 { 732 struct pmu_softc *sc = tch->cookie; 733 uint32_t sec; 734 uint8_t resp[16]; 735 736 sec = tvp->tv_sec + DIFF19041970; 737 if (pmu_send(sc, PMU_SET_RTC, 4, (uint8_t *)&sec, 16, resp) >= 0) 738 return 0; 739 return -1; 740 } 741 742 void 743 pmu_poweroff(void) 744 { 745 struct pmu_softc *sc; 746 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 747 uint8_t resp[16]; 748 749 if (pmu0 == NULL) 750 return; 751 sc = pmu0; 752 if (pmu_send(sc, PMU_POWER_OFF, 4, cmd, 16, resp) >= 0) 753 while (1); 754 } 755 756 void 757 pmu_restart(void) 758 { 759 struct pmu_softc *sc; 760 uint8_t resp[16]; 761 762 if (pmu0 == NULL) 763 return; 764 sc = pmu0; 765 if (pmu_send(sc, PMU_RESET_CPU, 0, NULL, 16, resp) >= 0) 766 while (1); 767 } 768 769 void 770 pmu_modem(int on) 771 { 772 struct pmu_softc *sc; 773 uint8_t resp[16], cmd[2] = {0, 0}; 774 775 if (pmu0 == NULL) 776 return; 777 778 sc = pmu0; 779 cmd[0] = PMU_POW0_MODEM | (on ? PMU_POW0_ON : 0); 780 pmu_send(sc, PMU_POWER_CTRL0, 1, cmd, 16, resp); 781 } 782 783 static void 784 pmu_autopoll(void *cookie, int flag) 785 { 786 struct pmu_softc *sc = cookie; 787 /* magical incantation to re-enable autopolling */ 788 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (flag >> 8) & 0xff, flag & 0xff}; 789 uint8_t resp[16]; 790 791 if (sc->sc_autopoll == flag) 792 return; 793 794 if (flag) { 795 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 796 } else { 797 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 798 } 799 sc->sc_autopoll = flag & 0xffff; 800 } 801 802 static int 803 pmu_adb_handler(void *cookie, int len, uint8_t *data) 804 { 805 struct pmu_softc *sc = cookie; 806 uint8_t resp[16]; 807 808 if (sc->sc_adb_handler != NULL) { 809 sc->sc_adb_handler(sc->sc_adb_cookie, len, data); 810 /* 811 * the PMU will turn off autopolling after each LISTEN so we 812 * need to re-enable it here whenever we receive an ACK for a 813 * LISTEN command 814 */ 815 if ((data[1] & 0x0c) == 0x08) { 816 uint8_t cmd[] = {0, 0x86, (sc->sc_autopoll >> 8) & 0xff, 817 sc->sc_autopoll & 0xff}; 818 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 819 } 820 return 0; 821 } 822 return -1; 823 } 824 825 static int 826 pmu_adb_send(void *cookie, int poll, int command, int len, uint8_t *data) 827 { 828 struct pmu_softc *sc = cookie; 829 int i; 830 uint8_t packet[16], resp[16]; 831 832 /* construct an ADB command packet and send it */ 833 packet[0] = command; 834 packet[1] = 0; 835 packet[2] = len; 836 for (i = 0; i < len; i++) 837 packet[i + 3] = data[i]; 838 (void)pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 839 840 return 0; 841 } 842 843 static int 844 pmu_adb_set_handler(void *cookie, void (*handler)(void *, int, uint8_t *), 845 void *hcookie) 846 { 847 struct pmu_softc *sc = cookie; 848 849 /* register a callback for incoming ADB messages */ 850 sc->sc_adb_handler = handler; 851 sc->sc_adb_cookie = hcookie; 852 return 0; 853 } 854 #if 0 855 static int 856 pmu_i2c_acquire_bus(void *cookie, int flags) 857 { 858 /* nothing yet */ 859 return 0; 860 } 861 862 static void 863 pmu_i2c_release_bus(void *cookie, int flags) 864 { 865 /* nothing here either */ 866 } 867 868 static int 869 pmu_i2c_exec(void *cookie, i2c_op_t op, i2c_addr_t addr, const void *_send, 870 size_t send_len, void *_recv, size_t recv_len, int flags) 871 { 872 #if 0 873 struct pmu_softc *sc = cookie; 874 const uint8_t *send = _send; 875 uint8_t *recv = _recv; 876 uint8_t command[16] = {PMU_POWERMGR, PMGR_IIC}; 877 878 DPRINTF("pmu_i2c_exec(%02x)\n", addr); 879 command[2] = addr; 880 881 memcpy(&command[3], send, min((int)send_len, 12)); 882 883 sc->sc_iic_done = 0; 884 pmu_send(sc, sc->sc_polling, send_len + 3, command); 885 886 while ((sc->sc_iic_done == 0) && (sc->sc_error == 0)) { 887 if (sc->sc_polling) { 888 pmu_poll(sc); 889 } else 890 tsleep(&sc->sc_todev, 0, "i2c", 1000); 891 } 892 893 if (sc->sc_error) { 894 sc->sc_error = 0; 895 return -1; 896 } 897 898 /* see if we're supposed to do a read */ 899 if (recv_len > 0) { 900 sc->sc_iic_done = 0; 901 command[2] |= 1; 902 command[3] = 0; 903 904 /* 905 * XXX we need to do something to limit the size of the answer 906 * - apparently the chip keeps sending until we tell it to stop 907 */ 908 pmu_send(sc, sc->sc_polling, 3, command); 909 while ((sc->sc_iic_done == 0) && (sc->sc_error == 0)) { 910 if (sc->sc_polling) { 911 pmu_poll(sc); 912 } else 913 tsleep(&sc->sc_todev, 0, "i2c", 1000); 914 } 915 916 if (sc->sc_error) { 917 printf("error trying to read\n"); 918 sc->sc_error = 0; 919 return -1; 920 } 921 } 922 923 if ((sc->sc_iic_done > 3) && (recv_len > 0)) { 924 /* we got an answer */ 925 recv[0] = sc->sc_iic_val; 926 printf("ret: %02x\n", sc->sc_iic_val); 927 return 1; 928 } 929 #endif 930 return 0; 931 } 932 #endif 933 934 static void 935 pmu_eject_card(struct pmu_softc *sc, int socket) 936 { 937 int s; 938 uint8_t buf[] = {socket | 4}; 939 uint8_t res[4]; 940 941 s = splhigh(); 942 sc->sc_pending_eject &= ~socket; 943 splx(s); 944 pmu_send(sc, PMU_EJECT_PCMCIA, 1, buf, 4, res); 945 } 946 947 static void 948 pmu_update_brightness(struct pmu_softc *sc) 949 { 950 int val; 951 uint8_t cmd[2], resp[16]; 952 953 if (sc->sc_brightness == sc->sc_brightness_wanted) 954 return; 955 956 if ((sc->sc_flags & PMU_HAS_BACKLIGHT_CONTROL) == 0) { 957 958 aprint_normal_dev(sc->sc_dev, 959 "this PMU doesn't support backlight control\n"); 960 sc->sc_brightness = sc->sc_brightness_wanted; 961 return; 962 } 963 964 if (sc->sc_brightness_wanted == 0) { 965 966 /* turn backlight off completely */ 967 cmd[0] = PMU_POW_OFF | PMU_POW_BACKLIGHT; 968 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 969 sc->sc_brightness = sc->sc_brightness_wanted; 970 971 /* don't bother with brightness */ 972 return; 973 } 974 975 /* turn backlight on if needed */ 976 if (sc->sc_brightness == 0) { 977 cmd[0] = PMU_POW_ON | PMU_POW_BACKLIGHT; 978 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 979 } 980 981 DPRINTF("pmu_update_brightness: %d -> %d\n", sc->sc_brightness, 982 sc->sc_brightness_wanted); 983 984 val = 0x7f - (sc->sc_brightness_wanted >> 1); 985 if (val < 0x08) 986 val = 0x08; 987 if (val > 0x78) 988 val = 0x78; 989 cmd[0] = val; 990 pmu_send(sc, PMU_SET_BRIGHTNESS, 1, cmd, 16, resp); 991 992 sc->sc_brightness = sc->sc_brightness_wanted; 993 } 994 995 static void 996 pmu_thread(void *cookie) 997 { 998 struct pmu_softc *sc = cookie; 999 //time_t time_bat = time_second; 1000 int ticks = hz, i; 1001 1002 while (1) { 1003 tsleep(&sc->sc_event, PWAIT, "wait", ticks); 1004 if (sc->sc_pending_eject != 0) { 1005 DPRINTF("eject %d\n", sc->sc_pending_eject); 1006 for (i = 1; i < 3; i++) { 1007 if (i & sc->sc_pending_eject) 1008 pmu_eject_card(sc, i); 1009 } 1010 } 1011 1012 /* see if we need to update brightness */ 1013 if (sc->sc_brightness_wanted != sc->sc_brightness) { 1014 pmu_update_brightness(sc); 1015 } 1016 1017 /* see if we need to update audio volume */ 1018 if (sc->sc_volume_wanted != sc->sc_volume) { 1019 #if 0 1020 set_volume(sc->sc_volume_wanted); 1021 #endif 1022 sc->sc_volume = sc->sc_volume_wanted; 1023 } 1024 1025 if (sc->sc_callback != NULL) 1026 sc->sc_callback(sc->sc_cb_cookie); 1027 } 1028 } 1029 1030 static int 1031 pmu_print(void *aux, const char *what) 1032 { 1033 1034 return 0; 1035 } 1036 1037 static void 1038 pmu_attach_legacy_battery(struct pmu_softc *sc) 1039 { 1040 struct battery_attach_args baa; 1041 1042 baa.baa_type = BATTERY_TYPE_LEGACY; 1043 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1044 config_found_ia(sc->sc_dev, "pmu_bus", &baa, pmu_print); 1045 } 1046 1047 static void 1048 pmu_attach_smart_battery(struct pmu_softc *sc, int num) 1049 { 1050 struct battery_attach_args baa; 1051 1052 baa.baa_type = BATTERY_TYPE_SMART; 1053 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1054 baa.baa_num = num; 1055 config_found_ia(sc->sc_dev, "pmu_bus", &baa, pmu_print); 1056 } 1057