pmu.c revision 1.39
1 /* $NetBSD: pmu.c,v 1.39 2021/08/07 16:18:58 thorpej 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 1.39 2021/08/07 16:18:58 thorpej 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 #include <sys/atomic.h> 39 #include <sys/mutex.h> 40 41 #include <sys/bus.h> 42 #include <machine/pio.h> 43 #include <machine/autoconf.h> 44 #include <dev/clock_subr.h> 45 #include <dev/i2c/i2cvar.h> 46 47 #include <dev/sysmon/sysmonvar.h> 48 49 #include <macppc/dev/viareg.h> 50 #include <macppc/dev/pmuvar.h> 51 #include <macppc/dev/batteryvar.h> 52 53 #include <dev/ofw/openfirm.h> 54 #include <dev/adb/adbvar.h> 55 #include "opt_pmu.h" 56 #include "nadb.h" 57 58 #ifdef PMU_DEBUG 59 #define DPRINTF printf 60 #else 61 #define DPRINTF while (0) printf 62 #endif 63 64 #define PMU_NOTREADY 0x1 /* has not been initialized yet */ 65 #define PMU_IDLE 0x2 /* the bus is currently idle */ 66 #define PMU_OUT 0x3 /* sending out a command */ 67 #define PMU_IN 0x4 /* receiving data */ 68 69 static void pmu_attach(device_t, device_t, void *); 70 static int pmu_match(device_t, cfdata_t, void *); 71 static void pmu_autopoll(void *, int); 72 73 static int pmu_intr(void *); 74 75 76 /* bits for sc_pending, as signals to the event thread */ 77 #define PMU_EV_CARD0 1 78 #define PMU_EV_CARD1 2 79 #define PMU_EV_BUTTON 4 80 #define PMU_EV_LID 8 81 82 struct pmu_softc { 83 device_t sc_dev; 84 void *sc_ih; 85 struct todr_chip_handle sc_todr; 86 struct adb_bus_accessops sc_adbops; 87 struct i2c_controller sc_i2c; 88 struct pmu_ops sc_pmu_ops; 89 struct sysmon_pswitch sc_lidswitch; 90 struct sysmon_pswitch sc_powerbutton; 91 bus_space_tag_t sc_memt; 92 bus_space_handle_t sc_memh; 93 uint32_t sc_flags; 94 #define PMU_HAS_BACKLIGHT_CONTROL 1 95 int sc_node; 96 int sc_error; 97 int sc_autopoll; 98 int sc_brightness, sc_brightness_wanted; 99 int sc_volume, sc_volume_wanted; 100 int sc_lid_closed; 101 int sc_button; 102 uint8_t sc_env_old; 103 uint8_t sc_env_mask; 104 /* deferred processing */ 105 lwp_t *sc_thread; 106 int sc_pending; 107 /* signalling the event thread */ 108 int sc_event; 109 /* ADB */ 110 void (*sc_adb_handler)(void *, int, uint8_t *); 111 void *sc_adb_cookie; 112 void (*sc_callback)(void *); 113 void *sc_cb_cookie; 114 }; 115 116 CFATTACH_DECL_NEW(pmu, sizeof(struct pmu_softc), 117 pmu_match, pmu_attach, NULL, NULL); 118 119 static inline void pmu_write_reg(struct pmu_softc *, int, uint8_t); 120 static inline uint8_t pmu_read_reg(struct pmu_softc *, int); 121 static void pmu_in(struct pmu_softc *); 122 static void pmu_out(struct pmu_softc *); 123 static void pmu_ack_off(struct pmu_softc *); 124 static void pmu_ack_on(struct pmu_softc *); 125 static int pmu_intr_state(struct pmu_softc *); 126 127 static void pmu_init(struct pmu_softc *); 128 static void pmu_thread(void *); 129 static void pmu_eject_card(struct pmu_softc *, int); 130 static void pmu_update_brightness(struct pmu_softc *); 131 static void pmu_register_callback(void *, void (*)(void *), void *); 132 /* 133 * send a message to the PMU. 134 */ 135 static int pmu_send(void *, int, int, uint8_t *, int, uint8_t *); 136 static void pmu_adb_poll(void *); 137 static int pmu_todr_set(todr_chip_handle_t, struct timeval *); 138 static int pmu_todr_get(todr_chip_handle_t, struct timeval *); 139 140 static int pmu_adb_handler(void *, int, uint8_t *); 141 142 static struct pmu_softc *pmu0 = NULL; 143 144 /* ADB bus attachment stuff */ 145 static int pmu_adb_send(void *, int, int, int, uint8_t *); 146 static int pmu_adb_set_handler(void *, void (*)(void *, int, uint8_t *), void *); 147 148 /* i2c stuff */ 149 static int pmu_i2c_exec(void *, i2c_op_t, i2c_addr_t, const void *, size_t, 150 void *, size_t, int); 151 152 static void pmu_attach_legacy_battery(struct pmu_softc *); 153 static void pmu_attach_smart_battery(struct pmu_softc *, int); 154 static int pmu_print(void *, const char *); 155 156 /* these values shows that number of data returned after 'send' cmd is sent */ 157 static signed char pm_send_cmd_type[] = { 158 -1, -1, -1, -1, -1, -1, -1, -1, 159 -1, -1, -1, -1, -1, -1, -1, -1, 160 0x01, 0x01, -1, -1, -1, -1, -1, -1, 161 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, 162 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 163 0x00, -1, -1, -1, -1, -1, -1, -1, 164 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 165 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 166 0x01, 0x01, -1, -1, -1, -1, -1, -1, 167 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 168 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 169 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 170 0x02, -1, -1, -1, -1, -1, -1, -1, 171 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 172 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 173 0x00, 0x00, -1, -1, -1, -1, 0x04, 0x04, 174 0x04, -1, 0x00, -1, -1, -1, -1, -1, 175 0x00, -1, -1, -1, -1, -1, -1, -1, 176 0x01, 0x02, -1, -1, -1, -1, -1, -1, 177 0x00, 0x00, -1, -1, -1, -1, -1, -1, 178 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 179 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1, 180 -1, -1, -1, -1, -1, -1, -1, -1, 181 -1, -1, -1, -1, -1, -1, -1, -1, 182 -1, -1, -1, -1, -1, -1, -1, -1, 183 -1, -1, -1, -1, -1, -1, -1, -1, 184 0x00, -1, -1, -1, -1, -1, -1, -1, 185 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, 186 -1, 0x04, 0x00, -1, -1, -1, -1, -1, 187 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, 188 -1, -1, -1, -1, -1, -1, -1, -1, 189 -1, -1, -1, -1, -1, -1, -1, -1 190 }; 191 192 /* these values shows that number of data returned after 'receive' cmd is sent */ 193 static signed char pm_receive_cmd_type[] = { 194 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 195 -1, -1, -1, -1, -1, -1, -1, -1, 196 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 197 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 198 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 199 -1, -1, -1, -1, -1, -1, -1, -1, 200 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 201 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 202 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 203 0x02, 0x02, -1, -1, -1, -1, -1, -1, 204 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 205 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 206 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 207 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 208 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 209 -1, -1, -1, -1, -1, -1, 0x01, 0x01, 210 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 211 0x06, -1, -1, -1, -1, -1, -1, -1, 212 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 213 0x02, 0x02, -1, -1, -1, -1, -1, -1, 214 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 215 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1, 216 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 217 -1, -1, -1, -1, -1, -1, -1, -1, 218 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 219 -1, -1, -1, -1, -1, -1, -1, -1, 220 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 221 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 222 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 223 -1, -1, 0x02, -1, -1, -1, -1, 0x00, 224 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 225 -1, -1, -1, -1, -1, -1, -1, -1, 226 }; 227 228 static const char *has_legacy_battery[] = { 229 "AAPL,3500", 230 "AAPL,3400/2400", 231 NULL }; 232 233 static const char *has_two_smart_batteries[] = { 234 "AAPL,PowerBook1998", 235 "PowerBook1,1", 236 NULL }; 237 238 static int 239 pmu_match(device_t parent, cfdata_t cf, void *aux) 240 { 241 struct confargs *ca = aux; 242 243 if (ca->ca_nreg < 8) 244 return 0; 245 246 if (ca->ca_nintr < 4) 247 return 0; 248 249 if (strcmp(ca->ca_name, "via-pmu") == 0) { 250 return 10; 251 } 252 253 return 0; 254 } 255 256 static void 257 pmu_attach(device_t parent, device_t self, void *aux) 258 { 259 struct confargs *ca = aux; 260 struct pmu_softc *sc = device_private(self); 261 struct i2cbus_attach_args iba; 262 uint32_t regs[16]; 263 int irq = ca->ca_intr[0]; 264 int node, extint_node, root_node; 265 int nbat = 1, i, pmnode; 266 int type = IST_EDGE; 267 uint8_t cmd[2] = {2, 0}; 268 uint8_t resp[16]; 269 char name[256], model[32]; 270 prop_dictionary_t dict = device_properties(self); 271 272 extint_node = of_getnode_byname(OF_parent(ca->ca_node), "extint-gpio1"); 273 if (extint_node) { 274 275 OF_getprop(extint_node, "interrupts", &irq, 4); 276 type = IST_LEVEL; 277 } 278 279 aprint_normal(" irq %d: ", irq); 280 281 sc->sc_dev = self; 282 sc->sc_node = ca->ca_node; 283 sc->sc_memt = ca->ca_tag; 284 285 root_node = OF_finddevice("/"); 286 287 sc->sc_error = 0; 288 sc->sc_autopoll = 0; 289 sc->sc_pending = 0; 290 sc->sc_env_old = 0; 291 sc->sc_brightness = sc->sc_brightness_wanted = 0x80; 292 sc->sc_volume = sc->sc_volume_wanted = 0x80; 293 sc->sc_flags = 0; 294 sc->sc_callback = NULL; 295 sc->sc_lid_closed = 0; 296 sc->sc_button = 0; 297 sc->sc_env_mask = 0xff; 298 299 /* 300 * core99 PowerMacs like to send environment messages with the lid 301 * switch bit set - since that doesn't make any sense here and it 302 * probably means something else anyway we mask it out 303 */ 304 305 if (OF_getprop(root_node, "model", model, 32) != 0) { 306 if (strncmp(model, "PowerMac", 8) == 0) { 307 sc->sc_env_mask = PMU_ENV_POWER_BUTTON; 308 } 309 } 310 311 if (bus_space_map(sc->sc_memt, ca->ca_reg[0] + ca->ca_baseaddr, 312 ca->ca_reg[1], 0, &sc->sc_memh) != 0) { 313 aprint_error_dev(self, "unable to map registers\n"); 314 return; 315 } 316 sc->sc_ih = intr_establish_xname(irq, type, IPL_TTY, pmu_intr, sc, 317 device_xname(self)); 318 319 pmu_init(sc); 320 321 sc->sc_pmu_ops.cookie = sc; 322 sc->sc_pmu_ops.do_command = pmu_send; 323 sc->sc_pmu_ops.register_callback = pmu_register_callback; 324 325 if (pmu0 == NULL) 326 pmu0 = sc; 327 328 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 329 330 /* check what kind of PMU we're talking to */ 331 if (pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp) > 1) 332 aprint_normal(" rev. %d", resp[1]); 333 aprint_normal("\n"); 334 335 node = OF_child(sc->sc_node); 336 337 while (node != 0) { 338 339 if (OF_getprop(node, "name", name, 256) <= 0) 340 goto next; 341 342 if (strncmp(name, "pmu-i2c", 8) == 0) { 343 int devs, sensors; 344 uint32_t addr; 345 char compat[256]; 346 prop_array_t cfg; 347 prop_dictionary_t dev; 348 prop_data_t data; 349 350 aprint_normal_dev(self, "initializing IIC bus\n"); 351 352 cfg = prop_array_create(); 353 prop_dictionary_set(dict, "i2c-child-devices", cfg); 354 prop_object_release(cfg); 355 356 /* look for i2c devices */ 357 devs = OF_child(node); 358 while (devs != 0) { 359 if (OF_getprop(devs, "name", name, 256) <= 0) 360 goto skip; 361 if (OF_getprop(devs, "compatible", 362 compat, 256) <= 0) 363 goto skip; 364 if (OF_getprop(devs, "reg", &addr, 4) <= 0) 365 goto skip; 366 addr = (addr & 0xff) >> 1; 367 DPRINTF("-> %s@%x\n", name, addr); 368 dev = prop_dictionary_create(); 369 prop_dictionary_set_string(dev, "name", name); 370 data = prop_data_create_copy(compat, strlen(compat)+1); 371 prop_dictionary_set(dev, "compatible", data); 372 prop_object_release(data); 373 prop_dictionary_set_uint32(dev, "addr", addr); 374 prop_dictionary_set_uint64(dev, "cookie", devs); 375 sensors = OF_child(devs); 376 while (sensors != 0) { 377 int reg; 378 char loc[64]; 379 char pname[8]; 380 if (OF_getprop(sensors, "reg", ®, 4) != 4) 381 goto nope; 382 if (OF_getprop(sensors, "location", loc, 63) <= 0) 383 goto nope; 384 snprintf(pname, 7, "s%02x", reg); 385 prop_dictionary_set_string(dev, pname, loc); 386 nope: 387 sensors = OF_peer(sensors); 388 } 389 prop_array_add(cfg, dev); 390 prop_object_release(dev); 391 skip: 392 devs = OF_peer(devs); 393 } 394 memset(&iba, 0, sizeof(iba)); 395 iba.iba_tag = &sc->sc_i2c; 396 iic_tag_init(&sc->sc_i2c); 397 sc->sc_i2c.ic_cookie = sc; 398 sc->sc_i2c.ic_exec = pmu_i2c_exec; 399 config_found(sc->sc_dev, &iba, iicbus_print, 400 CFARGS(.iattr = "i2cbus")); 401 goto next; 402 } 403 if (strncmp(name, "adb", 4) == 0) { 404 aprint_normal_dev(self, "initializing ADB\n"); 405 sc->sc_adbops.cookie = sc; 406 sc->sc_adbops.send = pmu_adb_send; 407 sc->sc_adbops.poll = pmu_adb_poll; 408 sc->sc_adbops.autopoll = pmu_autopoll; 409 sc->sc_adbops.set_handler = pmu_adb_set_handler; 410 #if NNADB > 0 411 config_found(self, &sc->sc_adbops, nadb_print, 412 CFARGS(.iattr = "adb_bus")); 413 #endif 414 goto next; 415 } 416 if (strncmp(name, "rtc", 4) == 0) { 417 418 aprint_normal_dev(self, "initializing RTC\n"); 419 sc->sc_todr.todr_gettime = pmu_todr_get; 420 sc->sc_todr.todr_settime = pmu_todr_set; 421 sc->sc_todr.cookie = sc; 422 todr_attach(&sc->sc_todr); 423 goto next; 424 } 425 if (strncmp(name, "battery", 8) == 0) 426 goto next; 427 428 aprint_normal_dev(self, "%s not configured\n", name); 429 next: 430 node = OF_peer(node); 431 } 432 433 if (OF_finddevice("/bandit/ohare") != -1) { 434 aprint_normal_dev(self, "enabling ohare backlight control\n"); 435 sc->sc_flags |= PMU_HAS_BACKLIGHT_CONTROL; 436 cmd[0] = 0; 437 cmd[1] = 0; 438 memset(resp, 0, 6); 439 if (pmu_send(sc, PMU_READ_BRIGHTNESS, 1, cmd, 16, resp) > 1) { 440 sc->sc_brightness_wanted = resp[1]; 441 pmu_update_brightness(sc); 442 } 443 } 444 445 /* attach batteries */ 446 if (of_compatible(root_node, has_legacy_battery)) { 447 448 pmu_attach_legacy_battery(sc); 449 } else if (of_compatible(root_node, has_two_smart_batteries)) { 450 451 pmu_attach_smart_battery(sc, 0); 452 pmu_attach_smart_battery(sc, 1); 453 } else { 454 455 /* check how many batteries we have */ 456 pmnode = of_getnode_byname(ca->ca_node, "power-mgt"); 457 if (pmnode == -1) 458 goto bat_done; 459 if (OF_getprop(pmnode, "prim-info", regs, sizeof(regs)) < 24) 460 goto bat_done; 461 nbat = regs[6] >> 16; 462 for (i = 0; i < nbat; i++) 463 pmu_attach_smart_battery(sc, i); 464 } 465 bat_done: 466 467 if (kthread_create(PRI_NONE, 0, NULL, pmu_thread, sc, &sc->sc_thread, 468 "%s", "pmu") != 0) { 469 aprint_error_dev(self, "unable to create event kthread\n"); 470 } 471 472 sc->sc_lidswitch.smpsw_name = "Lid switch"; 473 sc->sc_lidswitch.smpsw_type = PSWITCH_TYPE_LID; 474 if (sysmon_pswitch_register(&sc->sc_lidswitch) != 0) 475 aprint_error_dev(self, 476 "unable to register lid switch with sysmon\n"); 477 478 sc->sc_powerbutton.smpsw_name = "Power button"; 479 sc->sc_powerbutton.smpsw_type = PSWITCH_TYPE_POWER; 480 if (sysmon_pswitch_register(&sc->sc_powerbutton) != 0) 481 aprint_error_dev(self, 482 "unable to register power button with sysmon\n"); 483 } 484 485 static void 486 pmu_register_callback(void *pmu_cookie, void (*cb)(void *), void *cookie) 487 { 488 struct pmu_softc *sc = pmu_cookie; 489 490 sc->sc_callback = cb; 491 sc->sc_cb_cookie = cookie; 492 } 493 494 static void 495 pmu_init(struct pmu_softc *sc) 496 { 497 uint8_t pmu_imask, resp[16]; 498 499 pmu_imask = 500 PMU_INT_PCEJECT | PMU_INT_SNDBRT | PMU_INT_ADB/* | PMU_INT_TICK*/; 501 pmu_imask |= PMU_INT_BATTERY; 502 pmu_imask |= PMU_INT_ENVIRONMENT; 503 pmu_send(sc, PMU_SET_IMASK, 1, &pmu_imask, 16, resp); 504 505 pmu_write_reg(sc, vIER, 0x90); /* enable VIA interrupts */ 506 } 507 508 static inline void 509 pmu_write_reg(struct pmu_softc *sc, int offset, uint8_t value) 510 { 511 512 bus_space_write_1(sc->sc_memt, sc->sc_memh, offset, value); 513 } 514 515 static inline uint8_t 516 pmu_read_reg(struct pmu_softc *sc, int offset) 517 { 518 519 return bus_space_read_1(sc->sc_memt, sc->sc_memh, offset); 520 } 521 522 static inline int 523 pmu_send_byte(struct pmu_softc *sc, uint8_t data) 524 { 525 526 pmu_out(sc); 527 pmu_write_reg(sc, vSR, data); 528 pmu_ack_off(sc); 529 /* wait for intr to come up */ 530 /* XXX should add a timeout and bail if it expires */ 531 do {} while (pmu_intr_state(sc) == 0); 532 pmu_ack_on(sc); 533 do {} while (pmu_intr_state(sc)); 534 pmu_ack_on(sc); 535 DPRINTF(" %02x>", data); 536 return 0; 537 } 538 539 static inline int 540 pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 541 { 542 pmu_in(sc); 543 (void)pmu_read_reg(sc, vSR); 544 pmu_ack_off(sc); 545 /* wait for intr to come up */ 546 do {} while (pmu_intr_state(sc) == 0); 547 pmu_ack_on(sc); 548 do {} while (pmu_intr_state(sc)); 549 *data = pmu_read_reg(sc, vSR); 550 DPRINTF(" <%02x", *data); 551 return 0; 552 } 553 554 static int 555 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 556 uint8_t *out_msg) 557 { 558 struct pmu_softc *sc = cookie; 559 int i, rcv_len = -1, s; 560 uint8_t out_len, intreg; 561 562 DPRINTF("pmu_send: "); 563 564 s = splhigh(); 565 intreg = pmu_read_reg(sc, vIER); 566 intreg &= 0x10; 567 pmu_write_reg(sc, vIER, intreg); 568 569 /* wait idle */ 570 do {} while (pmu_intr_state(sc)); 571 sc->sc_error = 0; 572 573 /* send command */ 574 pmu_send_byte(sc, cmd); 575 576 /* send length if necessary */ 577 if (pm_send_cmd_type[cmd] < 0) { 578 pmu_send_byte(sc, length); 579 } 580 581 for (i = 0; i < length; i++) { 582 pmu_send_byte(sc, in_msg[i]); 583 DPRINTF(" next "); 584 } 585 DPRINTF("done sending\n"); 586 587 /* see if there's data to read */ 588 rcv_len = pm_receive_cmd_type[cmd]; 589 if (rcv_len == 0) 590 goto done; 591 592 /* read command */ 593 if (rcv_len == 1) { 594 pmu_read_byte(sc, out_msg); 595 goto done; 596 } else 597 out_msg[0] = cmd; 598 if (rcv_len < 0) { 599 pmu_read_byte(sc, &out_len); 600 rcv_len = out_len + 1; 601 } 602 for (i = 1; i < uimin(rcv_len, rlen); i++) 603 pmu_read_byte(sc, &out_msg[i]); 604 605 done: 606 DPRINTF("\n"); 607 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 608 splx(s); 609 610 return rcv_len; 611 } 612 613 static void 614 pmu_adb_poll(void *cookie) 615 { 616 struct pmu_softc *sc = cookie; 617 int s; 618 619 s = spltty(); 620 pmu_intr(sc); 621 splx(s); 622 } 623 624 static void 625 pmu_in(struct pmu_softc *sc) 626 { 627 uint8_t reg; 628 629 reg = pmu_read_reg(sc, vACR); 630 reg &= ~vSR_OUT; 631 reg |= 0x0c; 632 pmu_write_reg(sc, vACR, reg); 633 } 634 635 static void 636 pmu_out(struct pmu_softc *sc) 637 { 638 uint8_t reg; 639 640 reg = pmu_read_reg(sc, vACR); 641 reg |= vSR_OUT; 642 reg |= 0x0c; 643 pmu_write_reg(sc, vACR, reg); 644 } 645 646 static void 647 pmu_ack_off(struct pmu_softc *sc) 648 { 649 uint8_t reg; 650 651 reg = pmu_read_reg(sc, vBufB); 652 reg &= ~vPB4; 653 pmu_write_reg(sc, vBufB, reg); 654 } 655 656 static void 657 pmu_ack_on(struct pmu_softc *sc) 658 { 659 uint8_t reg; 660 661 reg = pmu_read_reg(sc, vBufB); 662 reg |= vPB4; 663 pmu_write_reg(sc, vBufB, reg); 664 } 665 666 static int 667 pmu_intr_state(struct pmu_softc *sc) 668 { 669 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 670 } 671 672 static int 673 pmu_intr(void *arg) 674 { 675 struct pmu_softc *sc = arg; 676 unsigned int len, i; 677 uint8_t resp[16]; 678 679 DPRINTF(":"); 680 681 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 682 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 683 if ((len < 1) || (resp[1] == 0)) 684 goto done; 685 #ifdef PMU_DEBUG 686 { 687 DPRINTF("intr: %02x", resp[0]); 688 for (i = 1; i < len; i++) 689 DPRINTF(" %02x", resp[i]); 690 DPRINTF("\n"); 691 } 692 #endif 693 if (resp[1] & PMU_INT_ADB) { 694 pmu_adb_handler(sc, len - 1, &resp[1]); 695 goto done; 696 } 697 if (resp[1] & PMU_INT_SNDBRT) { 698 /* deal with the brightness / volume control buttons */ 699 DPRINTF("brightness: %d volume %d\n", resp[2], resp[3]); 700 sc->sc_brightness_wanted = resp[2]; 701 sc->sc_volume_wanted = resp[3]; 702 wakeup(&sc->sc_event); 703 goto done; 704 } 705 if (resp[1] & PMU_INT_PCEJECT) { 706 /* deal with PCMCIA eject buttons */ 707 DPRINTF("card eject %d\n", resp[3]); 708 atomic_or_32(&sc->sc_pending, (resp[3] & 3)); 709 wakeup(&sc->sc_event); 710 goto done; 711 } 712 if (resp[1] & PMU_INT_BATTERY) { 713 /* deal with battery messages */ 714 printf("battery:"); 715 for (i = 2; i < len; i++) 716 printf(" %02x", resp[i]); 717 printf("\n"); 718 goto done; 719 } 720 if (resp[1] & PMU_INT_ENVIRONMENT) { 721 uint8_t diff; 722 #ifdef PMU_VERBOSE 723 /* deal with environment messages */ 724 printf("environment:"); 725 for (i = 2; i < len; i++) 726 printf(" %02x", resp[i]); 727 printf("\n"); 728 #endif 729 diff = (resp[2] ^ sc->sc_env_old ) & sc->sc_env_mask; 730 if (diff == 0) goto done; 731 sc->sc_env_old = resp[2]; 732 if (diff & PMU_ENV_LID_CLOSED) { 733 sc->sc_lid_closed = (resp[2] & PMU_ENV_LID_CLOSED) != 0; 734 atomic_or_32(&sc->sc_pending, PMU_EV_LID); 735 wakeup(&sc->sc_event); 736 } 737 if (diff & PMU_ENV_POWER_BUTTON) { 738 sc->sc_button = (resp[2] & PMU_ENV_POWER_BUTTON) != 0; 739 atomic_or_32(&sc->sc_pending, PMU_EV_BUTTON); 740 wakeup(&sc->sc_event); 741 } 742 goto done; 743 } 744 if (resp[1] & PMU_INT_TICK) { 745 /* don't bother */ 746 goto done; 747 } 748 749 /* unknown interrupt code?! */ 750 #ifdef PMU_DEBUG 751 printf("pmu intr: %02x:", resp[1]); 752 for (i = 2; i < len; i++) 753 printf(" %02x", resp[i]); 754 printf("\n"); 755 #endif 756 done: 757 return 1; 758 } 759 760 #if 0 761 static int 762 pmu_error_handler(void *cookie, int len, uint8_t *data) 763 { 764 struct pmu_softc *sc = cookie; 765 766 /* 767 * something went wrong 768 * byte 3 seems to be the failed command 769 */ 770 sc->sc_error = 1; 771 wakeup(&sc->sc_todev); 772 return 0; 773 } 774 #endif 775 #define DIFF19041970 2082844800 776 777 static int 778 pmu_todr_get(todr_chip_handle_t tch, struct timeval *tvp) 779 { 780 struct pmu_softc *sc = tch->cookie; 781 uint32_t sec; 782 int count = 10; 783 int ok = FALSE; 784 uint8_t resp[16]; 785 786 DPRINTF("pmu_todr_get\n"); 787 while ((count > 0) && (!ok)) { 788 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 789 790 memcpy(&sec, &resp[1], 4); 791 tvp->tv_sec = sec - DIFF19041970; 792 ok = (sec > DIFF19041970) && (sec < 0xf0000000); 793 if (!ok) aprint_error_dev(sc->sc_dev, 794 "got garbage from rtc (%08x)\n", sec); 795 count--; 796 } 797 if (count == 0) { 798 aprint_error_dev(sc->sc_dev, 799 "unable to get a sane time value\n"); 800 tvp->tv_sec = 0; 801 } 802 DPRINTF("tod: %" PRIo64 "\n", tvp->tv_sec); 803 tvp->tv_usec = 0; 804 return 0; 805 } 806 807 static int 808 pmu_todr_set(todr_chip_handle_t tch, struct timeval *tvp) 809 { 810 struct pmu_softc *sc = tch->cookie; 811 uint32_t sec; 812 uint8_t resp[16]; 813 814 sec = tvp->tv_sec + DIFF19041970; 815 if (pmu_send(sc, PMU_SET_RTC, 4, (uint8_t *)&sec, 16, resp) >= 0) 816 return 0; 817 return -1; 818 } 819 820 void 821 pmu_poweroff(void) 822 { 823 struct pmu_softc *sc; 824 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 825 uint8_t resp[16]; 826 827 if (pmu0 == NULL) 828 return; 829 sc = pmu0; 830 if (pmu_send(sc, PMU_POWER_OFF, 4, cmd, 16, resp) >= 0) 831 while (1); 832 } 833 834 void 835 pmu_restart(void) 836 { 837 struct pmu_softc *sc; 838 uint8_t resp[16]; 839 840 if (pmu0 == NULL) 841 return; 842 sc = pmu0; 843 if (pmu_send(sc, PMU_RESET_CPU, 0, NULL, 16, resp) >= 0) 844 while (1); 845 } 846 847 void 848 pmu_modem(int on) 849 { 850 struct pmu_softc *sc; 851 uint8_t resp[16], cmd[2] = {0, 0}; 852 853 if (pmu0 == NULL) 854 return; 855 856 sc = pmu0; 857 cmd[0] = PMU_POW0_MODEM | (on ? PMU_POW0_ON : 0); 858 pmu_send(sc, PMU_POWER_CTRL0, 1, cmd, 16, resp); 859 } 860 861 static void 862 pmu_autopoll(void *cookie, int flag) 863 { 864 struct pmu_softc *sc = cookie; 865 /* magical incantation to re-enable autopolling */ 866 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (flag >> 8) & 0xff, flag & 0xff}; 867 uint8_t resp[16]; 868 869 if (sc->sc_autopoll == flag) 870 return; 871 872 if (flag) { 873 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 874 } else { 875 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 876 } 877 sc->sc_autopoll = flag & 0xffff; 878 } 879 880 static int 881 pmu_adb_handler(void *cookie, int len, uint8_t *data) 882 { 883 struct pmu_softc *sc = cookie; 884 uint8_t resp[16]; 885 886 if (sc->sc_adb_handler != NULL) { 887 sc->sc_adb_handler(sc->sc_adb_cookie, len, data); 888 /* 889 * the PMU will turn off autopolling after each LISTEN so we 890 * need to re-enable it here whenever we receive an ACK for a 891 * LISTEN command 892 */ 893 if ((data[1] & 0x0c) == 0x08) { 894 uint8_t cmd[] = {0, 0x86, (sc->sc_autopoll >> 8) & 0xff, 895 sc->sc_autopoll & 0xff}; 896 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 897 } 898 return 0; 899 } 900 return -1; 901 } 902 903 static int 904 pmu_adb_send(void *cookie, int poll, int command, int len, uint8_t *data) 905 { 906 struct pmu_softc *sc = cookie; 907 int i; 908 uint8_t packet[16], resp[16]; 909 910 /* construct an ADB command packet and send it */ 911 packet[0] = command; 912 packet[1] = 0; 913 packet[2] = len; 914 for (i = 0; i < len; i++) 915 packet[i + 3] = data[i]; 916 (void)pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 917 918 return 0; 919 } 920 921 static int 922 pmu_adb_set_handler(void *cookie, void (*handler)(void *, int, uint8_t *), 923 void *hcookie) 924 { 925 struct pmu_softc *sc = cookie; 926 927 /* register a callback for incoming ADB messages */ 928 sc->sc_adb_handler = handler; 929 sc->sc_adb_cookie = hcookie; 930 return 0; 931 } 932 933 static int 934 pmu_i2c_exec(void *cookie, i2c_op_t op, i2c_addr_t addr, const void *_send, 935 size_t send_len, void *_recv, size_t recv_len, int flags) 936 { 937 struct pmu_softc *sc = cookie; 938 const uint8_t *send = _send; 939 uint8_t command[32] = {1, /* bus number */ 940 PMU_I2C_MODE_SIMPLE, 941 0, /* bus2 */ 942 addr, 943 0, /* sub address */ 944 0, /* comb address */ 945 0, /* count */ 946 0 /* data */ 947 }; 948 uint8_t resp[16]; 949 int len, rw; 950 951 rw = addr << 1; 952 command[3] = rw; 953 if (send_len > 0) { 954 command[6] = send_len; 955 memcpy(&command[7], send, send_len); 956 len = send_len + 7; 957 DPRINTF("pmu_i2c_exec(%02x, %d)\n", addr, send_len); 958 959 len = pmu_send(sc, PMU_I2C_CMD, len, command, 16, resp); 960 DPRINTF("resp(%d): %2x %2x\n", len, resp[0], resp[1]); 961 962 if (resp[1] != PMU_I2C_STATUS_OK) { 963 DPRINTF("%s: iic error %d\n", __func__, resp[1]); 964 return -1; 965 } 966 } 967 /* see if we're supposed to read */ 968 if (I2C_OP_READ_P(op)) { 969 rw |= 1; 970 command[3] = rw; 971 command[6] = recv_len; 972 len = pmu_send(sc, PMU_I2C_CMD, 7, command, 16, resp); 973 DPRINTF("resp2(%d): %2x %2x\n", len, resp[0], resp[1]); 974 975 command[0] = 0; 976 len = pmu_send(sc, PMU_I2C_CMD, 1, command, 16, resp); 977 DPRINTF("resp3(%d): %2x %2x %2x\n", len, resp[0], resp[1], 978 resp[2]); 979 if ((len - 2) != recv_len) { 980 DPRINTF("%s: %s(%d) - got %d\n", 981 device_xname(sc->sc_dev), 982 __func__, recv_len, len - 2); 983 return -1; 984 } 985 memcpy(_recv, &resp[2], len - 2); 986 return 0; 987 }; 988 return 0; 989 } 990 991 static void 992 pmu_eject_card(struct pmu_softc *sc, int socket) 993 { 994 uint8_t buf[] = {socket | 4}; 995 uint8_t res[4]; 996 997 atomic_and_32(&sc->sc_pending, ~socket); 998 pmu_send(sc, PMU_EJECT_PCMCIA, 1, buf, 4, res); 999 } 1000 1001 static void 1002 pmu_update_brightness(struct pmu_softc *sc) 1003 { 1004 int val; 1005 uint8_t cmd[2], resp[16]; 1006 1007 if (sc->sc_brightness == sc->sc_brightness_wanted) 1008 return; 1009 1010 if ((sc->sc_flags & PMU_HAS_BACKLIGHT_CONTROL) == 0) { 1011 1012 aprint_normal_dev(sc->sc_dev, 1013 "this PMU doesn't support backlight control\n"); 1014 sc->sc_brightness = sc->sc_brightness_wanted; 1015 return; 1016 } 1017 1018 if (sc->sc_brightness_wanted == 0) { 1019 1020 /* turn backlight off completely */ 1021 cmd[0] = PMU_POW_OFF | PMU_POW_BACKLIGHT; 1022 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 1023 sc->sc_brightness = sc->sc_brightness_wanted; 1024 1025 /* don't bother with brightness */ 1026 return; 1027 } 1028 1029 /* turn backlight on if needed */ 1030 if (sc->sc_brightness == 0) { 1031 cmd[0] = PMU_POW_ON | PMU_POW_BACKLIGHT; 1032 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 1033 } 1034 1035 DPRINTF("pmu_update_brightness: %d -> %d\n", sc->sc_brightness, 1036 sc->sc_brightness_wanted); 1037 1038 val = 0x7f - (sc->sc_brightness_wanted >> 1); 1039 if (val < 0x08) 1040 val = 0x08; 1041 if (val > 0x78) 1042 val = 0x78; 1043 cmd[0] = val; 1044 pmu_send(sc, PMU_SET_BRIGHTNESS, 1, cmd, 16, resp); 1045 1046 sc->sc_brightness = sc->sc_brightness_wanted; 1047 } 1048 1049 static void 1050 pmu_thread(void *cookie) 1051 { 1052 struct pmu_softc *sc = cookie; 1053 //time_t time_bat = time_second; 1054 int ticks = hz, i; 1055 1056 while (1) { 1057 tsleep(&sc->sc_event, PWAIT, "wait", ticks); 1058 if ((sc->sc_pending & 3) != 0) { 1059 DPRINTF("eject %d\n", sc->sc_pending & 3); 1060 for (i = 1; i < 3; i++) { 1061 if (i & sc->sc_pending) 1062 pmu_eject_card(sc, i); 1063 } 1064 } 1065 1066 /* see if we need to update brightness */ 1067 if (sc->sc_brightness_wanted != sc->sc_brightness) { 1068 pmu_update_brightness(sc); 1069 } 1070 1071 /* see if we need to update audio volume */ 1072 if (sc->sc_volume_wanted != sc->sc_volume) { 1073 #if 0 1074 set_volume(sc->sc_volume_wanted); 1075 #endif 1076 sc->sc_volume = sc->sc_volume_wanted; 1077 } 1078 1079 if (sc->sc_pending & PMU_EV_LID) { 1080 atomic_and_32(&sc->sc_pending, ~PMU_EV_LID); 1081 sysmon_pswitch_event(&sc->sc_lidswitch, 1082 sc->sc_lid_closed ? PSWITCH_EVENT_PRESSED : 1083 PSWITCH_EVENT_RELEASED); 1084 } 1085 1086 if (sc->sc_pending & PMU_EV_BUTTON) { 1087 atomic_and_32(&sc->sc_pending, ~PMU_EV_BUTTON); 1088 sysmon_pswitch_event(&sc->sc_powerbutton, 1089 sc->sc_button ? PSWITCH_EVENT_PRESSED : 1090 PSWITCH_EVENT_RELEASED); 1091 } 1092 1093 if (sc->sc_callback != NULL) 1094 sc->sc_callback(sc->sc_cb_cookie); 1095 } 1096 } 1097 1098 static int 1099 pmu_print(void *aux, const char *what) 1100 { 1101 1102 return 0; 1103 } 1104 1105 static void 1106 pmu_attach_legacy_battery(struct pmu_softc *sc) 1107 { 1108 struct battery_attach_args baa; 1109 1110 baa.baa_type = BATTERY_TYPE_LEGACY; 1111 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1112 config_found(sc->sc_dev, &baa, pmu_print, 1113 CFARGS(.iattr = "pmu_bus")); 1114 } 1115 1116 static void 1117 pmu_attach_smart_battery(struct pmu_softc *sc, int num) 1118 { 1119 struct battery_attach_args baa; 1120 1121 baa.baa_type = BATTERY_TYPE_SMART; 1122 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1123 baa.baa_num = num; 1124 config_found(sc->sc_dev, &baa, pmu_print, 1125 CFARGS(.iattr = "pmu_bus")); 1126 } 1127
Indexes created Fri Sep 26 20:09:58 GMT 2025