pmu.c revision 1.21
1 /* $NetBSD: pmu.c,v 1.21 2011/07/01 18:41:52 dyoung 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 1.21 2011/07/01 18:41:52 dyoung 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 volatile uint8_t scratch; 471 pmu_in(sc); 472 scratch = pmu_read_reg(sc, vSR); 473 pmu_ack_off(sc); 474 /* wait for intr to come up */ 475 do {} while (pmu_intr_state(sc) == 0); 476 pmu_ack_on(sc); 477 do {} while (pmu_intr_state(sc)); 478 *data = pmu_read_reg(sc, vSR); 479 DPRINTF(" <%02x", *data); 480 return 0; 481 } 482 483 static int 484 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 485 uint8_t *out_msg) 486 { 487 struct pmu_softc *sc = cookie; 488 int i, rcv_len = -1, s; 489 uint8_t out_len, intreg; 490 491 DPRINTF("pmu_send: "); 492 493 s = splhigh(); 494 intreg = pmu_read_reg(sc, vIER); 495 intreg &= 0x10; 496 pmu_write_reg(sc, vIER, intreg); 497 498 /* wait idle */ 499 do {} while (pmu_intr_state(sc)); 500 sc->sc_error = 0; 501 502 /* send command */ 503 pmu_send_byte(sc, cmd); 504 505 /* send length if necessary */ 506 if (pm_send_cmd_type[cmd] < 0) { 507 pmu_send_byte(sc, length); 508 } 509 510 for (i = 0; i < length; i++) { 511 pmu_send_byte(sc, in_msg[i]); 512 DPRINTF(" next "); 513 } 514 DPRINTF("done sending\n"); 515 516 /* see if there's data to read */ 517 rcv_len = pm_receive_cmd_type[cmd]; 518 if (rcv_len == 0) 519 goto done; 520 521 /* read command */ 522 if (rcv_len == 1) { 523 pmu_read_byte(sc, out_msg); 524 goto done; 525 } else 526 out_msg[0] = cmd; 527 if (rcv_len < 0) { 528 pmu_read_byte(sc, &out_len); 529 rcv_len = out_len + 1; 530 } 531 for (i = 1; i < min(rcv_len, rlen); i++) 532 pmu_read_byte(sc, &out_msg[i]); 533 534 done: 535 DPRINTF("\n"); 536 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 537 splx(s); 538 539 return rcv_len; 540 } 541 542 static void 543 pmu_adb_poll(void *cookie) 544 { 545 struct pmu_softc *sc = cookie; 546 int s; 547 548 s = spltty(); 549 pmu_intr(sc); 550 splx(s); 551 } 552 553 static void 554 pmu_in(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_out(struct pmu_softc *sc) 566 { 567 uint8_t reg; 568 569 reg = pmu_read_reg(sc, vACR); 570 reg |= vSR_OUT; 571 reg |= 0x0c; 572 pmu_write_reg(sc, vACR, reg); 573 } 574 575 static void 576 pmu_ack_off(struct pmu_softc *sc) 577 { 578 uint8_t reg; 579 580 reg = pmu_read_reg(sc, vBufB); 581 reg &= ~vPB4; 582 pmu_write_reg(sc, vBufB, reg); 583 } 584 585 static void 586 pmu_ack_on(struct pmu_softc *sc) 587 { 588 uint8_t reg; 589 590 reg = pmu_read_reg(sc, vBufB); 591 reg |= vPB4; 592 pmu_write_reg(sc, vBufB, reg); 593 } 594 595 static int 596 pmu_intr_state(struct pmu_softc *sc) 597 { 598 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 599 } 600 601 static int 602 pmu_intr(void *arg) 603 { 604 struct pmu_softc *sc = arg; 605 unsigned int len, i; 606 uint8_t resp[16]; 607 608 DPRINTF(":"); 609 610 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 611 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 612 if ((len < 1) || (resp[1] == 0)) 613 goto done; 614 #ifdef PMU_DEBUG 615 { 616 DPRINTF("intr: %02x", resp[0]); 617 for (i = 1; i < len; i++) 618 DPRINTF(" %02x", resp[i]); 619 DPRINTF("\n"); 620 } 621 #endif 622 if (resp[1] & PMU_INT_ADB) { 623 pmu_adb_handler(sc, len - 1, &resp[1]); 624 goto done; 625 } 626 if (resp[1] & PMU_INT_SNDBRT) { 627 /* deal with the brightness / volume control buttons */ 628 DPRINTF("brightness: %d volume %d\n", resp[2], resp[3]); 629 sc->sc_brightness_wanted = resp[2]; 630 sc->sc_volume_wanted = resp[3]; 631 wakeup(&sc->sc_event); 632 goto done; 633 } 634 if (resp[1] & PMU_INT_PCEJECT) { 635 /* deal with PCMCIA eject buttons */ 636 DPRINTF("card eject %d\n", resp[3]); 637 sc->sc_pending_eject |= (resp[3] & 3); 638 wakeup(&sc->sc_event); 639 goto done; 640 } 641 if (resp[1] & PMU_INT_BATTERY) { 642 /* deal with battery messages */ 643 printf("battery:"); 644 for (i = 2; i < len; i++) 645 printf(" %02x", resp[i]); 646 printf("\n"); 647 goto done; 648 } 649 if (resp[1] & PMU_INT_ENVIRONMENT) { 650 int closed; 651 #ifdef PMU_VERBOSE 652 /* deal with environment messages */ 653 printf("environment:"); 654 for (i = 2; i < len; i++) 655 printf(" %02x", resp[i]); 656 printf("\n"); 657 #endif 658 closed = (resp[2] & PMU_ENV_LID_CLOSED) != 0; 659 if (closed != sc->sc_lid_closed) { 660 sc->sc_lid_closed = closed; 661 sysmon_pswitch_event(&sc->sc_lidswitch, 662 closed ? PSWITCH_EVENT_PRESSED : 663 PSWITCH_EVENT_RELEASED); 664 } 665 goto done; 666 } 667 if (resp[1] & PMU_INT_TICK) { 668 /* don't bother */ 669 goto done; 670 } 671 672 /* unknown interrupt code?! */ 673 #ifdef PMU_DEBUG 674 printf("pmu intr: %02x:", resp[1]); 675 for (i = 2; i < len; i++) 676 printf(" %02x", resp[i]); 677 printf("\n"); 678 #endif 679 done: 680 return 1; 681 } 682 683 #if 0 684 static int 685 pmu_error_handler(void *cookie, int len, uint8_t *data) 686 { 687 struct pmu_softc *sc = cookie; 688 689 /* 690 * something went wrong 691 * byte 3 seems to be the failed command 692 */ 693 sc->sc_error = 1; 694 wakeup(&sc->sc_todev); 695 return 0; 696 } 697 #endif 698 #define DIFF19041970 2082844800 699 700 static int 701 pmu_todr_get(todr_chip_handle_t tch, struct timeval *tvp) 702 { 703 struct pmu_softc *sc = tch->cookie; 704 uint32_t sec; 705 uint8_t resp[16]; 706 707 DPRINTF("pmu_todr_get\n"); 708 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 709 710 memcpy(&sec, &resp[1], 4); 711 tvp->tv_sec = sec - DIFF19041970; 712 DPRINTF("tod: %" PRIo64 "\n", tvp->tv_sec); 713 tvp->tv_usec = 0; 714 return 0; 715 } 716 717 static int 718 pmu_todr_set(todr_chip_handle_t tch, struct timeval *tvp) 719 { 720 struct pmu_softc *sc = tch->cookie; 721 uint32_t sec; 722 uint8_t resp[16]; 723 724 sec = tvp->tv_sec + DIFF19041970; 725 if (pmu_send(sc, PMU_SET_RTC, 4, (uint8_t *)&sec, 16, resp) >= 0) 726 return 0; 727 return -1; 728 } 729 730 void 731 pmu_poweroff(void) 732 { 733 struct pmu_softc *sc; 734 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 735 uint8_t resp[16]; 736 737 if (pmu0 == NULL) 738 return; 739 sc = pmu0; 740 if (pmu_send(sc, PMU_POWER_OFF, 4, cmd, 16, resp) >= 0) 741 while (1); 742 } 743 744 void 745 pmu_restart(void) 746 { 747 struct pmu_softc *sc; 748 uint8_t resp[16]; 749 750 if (pmu0 == NULL) 751 return; 752 sc = pmu0; 753 if (pmu_send(sc, PMU_RESET_CPU, 0, NULL, 16, resp) >= 0) 754 while (1); 755 } 756 757 void 758 pmu_modem(int on) 759 { 760 struct pmu_softc *sc; 761 uint8_t resp[16], cmd[2] = {0, 0}; 762 763 if (pmu0 == NULL) 764 return; 765 766 sc = pmu0; 767 cmd[0] = PMU_POW0_MODEM | (on ? PMU_POW0_ON : 0); 768 pmu_send(sc, PMU_POWER_CTRL0, 1, cmd, 16, resp); 769 } 770 771 static void 772 pmu_autopoll(void *cookie, int flag) 773 { 774 struct pmu_softc *sc = cookie; 775 /* magical incantation to re-enable autopolling */ 776 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (flag >> 8) & 0xff, flag & 0xff}; 777 uint8_t resp[16]; 778 779 if (sc->sc_autopoll == flag) 780 return; 781 782 if (flag) { 783 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 784 } else { 785 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 786 } 787 sc->sc_autopoll = flag & 0xffff; 788 } 789 790 static int 791 pmu_adb_handler(void *cookie, int len, uint8_t *data) 792 { 793 struct pmu_softc *sc = cookie; 794 uint8_t resp[16]; 795 796 if (sc->sc_adb_handler != NULL) { 797 sc->sc_adb_handler(sc->sc_adb_cookie, len, data); 798 /* 799 * the PMU will turn off autopolling after each LISTEN so we 800 * need to re-enable it here whenever we receive an ACK for a 801 * LISTEN command 802 */ 803 if ((data[1] & 0x0c) == 0x08) { 804 uint8_t cmd[] = {0, 0x86, (sc->sc_autopoll >> 8) & 0xff, 805 sc->sc_autopoll & 0xff}; 806 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 807 } 808 return 0; 809 } 810 return -1; 811 } 812 813 static int 814 pmu_adb_send(void *cookie, int poll, int command, int len, uint8_t *data) 815 { 816 struct pmu_softc *sc = cookie; 817 int i, replen; 818 uint8_t packet[16], resp[16]; 819 820 /* construct an ADB command packet and send it */ 821 packet[0] = command; 822 packet[1] = 0; 823 packet[2] = len; 824 for (i = 0; i < len; i++) 825 packet[i + 3] = data[i]; 826 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 827 828 return 0; 829 } 830 831 static int 832 pmu_adb_set_handler(void *cookie, void (*handler)(void *, int, uint8_t *), 833 void *hcookie) 834 { 835 struct pmu_softc *sc = cookie; 836 837 /* register a callback for incoming ADB messages */ 838 sc->sc_adb_handler = handler; 839 sc->sc_adb_cookie = hcookie; 840 return 0; 841 } 842 #if 0 843 static int 844 pmu_i2c_acquire_bus(void *cookie, int flags) 845 { 846 /* nothing yet */ 847 return 0; 848 } 849 850 static void 851 pmu_i2c_release_bus(void *cookie, int flags) 852 { 853 /* nothing here either */ 854 } 855 856 static int 857 pmu_i2c_exec(void *cookie, i2c_op_t op, i2c_addr_t addr, const void *_send, 858 size_t send_len, void *_recv, size_t recv_len, int flags) 859 { 860 #if 0 861 struct pmu_softc *sc = cookie; 862 const uint8_t *send = _send; 863 uint8_t *recv = _recv; 864 uint8_t command[16] = {PMU_POWERMGR, PMGR_IIC}; 865 866 DPRINTF("pmu_i2c_exec(%02x)\n", addr); 867 command[2] = addr; 868 869 memcpy(&command[3], send, min((int)send_len, 12)); 870 871 sc->sc_iic_done = 0; 872 pmu_send(sc, sc->sc_polling, send_len + 3, command); 873 874 while ((sc->sc_iic_done == 0) && (sc->sc_error == 0)) { 875 if (sc->sc_polling) { 876 pmu_poll(sc); 877 } else 878 tsleep(&sc->sc_todev, 0, "i2c", 1000); 879 } 880 881 if (sc->sc_error) { 882 sc->sc_error = 0; 883 return -1; 884 } 885 886 /* see if we're supposed to do a read */ 887 if (recv_len > 0) { 888 sc->sc_iic_done = 0; 889 command[2] |= 1; 890 command[3] = 0; 891 892 /* 893 * XXX we need to do something to limit the size of the answer 894 * - apparently the chip keeps sending until we tell it to stop 895 */ 896 pmu_send(sc, sc->sc_polling, 3, command); 897 while ((sc->sc_iic_done == 0) && (sc->sc_error == 0)) { 898 if (sc->sc_polling) { 899 pmu_poll(sc); 900 } else 901 tsleep(&sc->sc_todev, 0, "i2c", 1000); 902 } 903 904 if (sc->sc_error) { 905 printf("error trying to read\n"); 906 sc->sc_error = 0; 907 return -1; 908 } 909 } 910 911 if ((sc->sc_iic_done > 3) && (recv_len > 0)) { 912 /* we got an answer */ 913 recv[0] = sc->sc_iic_val; 914 printf("ret: %02x\n", sc->sc_iic_val); 915 return 1; 916 } 917 #endif 918 return 0; 919 } 920 #endif 921 922 static void 923 pmu_eject_card(struct pmu_softc *sc, int socket) 924 { 925 int s; 926 uint8_t buf[] = {socket | 4}; 927 uint8_t res[4]; 928 929 s = splhigh(); 930 sc->sc_pending_eject &= ~socket; 931 splx(s); 932 pmu_send(sc, PMU_EJECT_PCMCIA, 1, buf, 4, res); 933 } 934 935 static void 936 pmu_update_brightness(struct pmu_softc *sc) 937 { 938 int val; 939 uint8_t cmd[2], resp[16]; 940 941 if (sc->sc_brightness == sc->sc_brightness_wanted) 942 return; 943 944 if ((sc->sc_flags & PMU_HAS_BACKLIGHT_CONTROL) == 0) { 945 946 aprint_normal_dev(sc->sc_dev, 947 "this PMU doesn't support backlight control\n"); 948 sc->sc_brightness = sc->sc_brightness_wanted; 949 return; 950 } 951 952 if (sc->sc_brightness_wanted == 0) { 953 954 /* turn backlight off completely */ 955 cmd[0] = PMU_POW_OFF | PMU_POW_BACKLIGHT; 956 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 957 sc->sc_brightness = sc->sc_brightness_wanted; 958 959 /* don't bother with brightness */ 960 return; 961 } 962 963 /* turn backlight on if needed */ 964 if (sc->sc_brightness == 0) { 965 cmd[0] = PMU_POW_ON | PMU_POW_BACKLIGHT; 966 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 967 } 968 969 DPRINTF("pmu_update_brightness: %d -> %d\n", sc->sc_brightness, 970 sc->sc_brightness_wanted); 971 972 val = 0x7f - (sc->sc_brightness_wanted >> 1); 973 if (val < 0x08) 974 val = 0x08; 975 if (val > 0x78) 976 val = 0x78; 977 cmd[0] = val; 978 pmu_send(sc, PMU_SET_BRIGHTNESS, 1, cmd, 16, resp); 979 980 sc->sc_brightness = sc->sc_brightness_wanted; 981 } 982 983 static void 984 pmu_thread(void *cookie) 985 { 986 struct pmu_softc *sc = cookie; 987 //time_t time_bat = time_second; 988 int ticks = hz, i; 989 990 while (1) { 991 tsleep(&sc->sc_event, PWAIT, "wait", ticks); 992 if (sc->sc_pending_eject != 0) { 993 DPRINTF("eject %d\n", sc->sc_pending_eject); 994 for (i = 1; i < 3; i++) { 995 if (i & sc->sc_pending_eject) 996 pmu_eject_card(sc, i); 997 } 998 } 999 1000 /* see if we need to update brightness */ 1001 if (sc->sc_brightness_wanted != sc->sc_brightness) { 1002 pmu_update_brightness(sc); 1003 } 1004 1005 /* see if we need to update audio volume */ 1006 if (sc->sc_volume_wanted != sc->sc_volume) { 1007 #if 0 1008 set_volume(sc->sc_volume_wanted); 1009 #endif 1010 sc->sc_volume = sc->sc_volume_wanted; 1011 } 1012 1013 if (sc->sc_callback != NULL) 1014 sc->sc_callback(sc->sc_cb_cookie); 1015 } 1016 } 1017 1018 static int 1019 pmu_print(void *aux, const char *what) 1020 { 1021 1022 return 0; 1023 } 1024 1025 static void 1026 pmu_attach_legacy_battery(struct pmu_softc *sc) 1027 { 1028 struct battery_attach_args baa; 1029 1030 baa.baa_type = BATTERY_TYPE_LEGACY; 1031 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1032 config_found_ia(sc->sc_dev, "pmu_bus", &baa, pmu_print); 1033 } 1034 1035 static void 1036 pmu_attach_smart_battery(struct pmu_softc *sc, int num) 1037 { 1038 struct battery_attach_args baa; 1039 1040 baa.baa_type = BATTERY_TYPE_SMART; 1041 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1042 baa.baa_num = num; 1043 config_found_ia(sc->sc_dev, "pmu_bus", &baa, pmu_print); 1044 } 1045
Indexes created Tue Sep 23 07:09:52 GMT 2025