/* $OpenBSD: pm_direct.c,v 1.16 2005/12/10 13:45:38 pedro Exp $ */ /* $NetBSD: pm_direct.c,v 1.9 2000/06/08 22:10:46 tsubai Exp $ */ /* * Copyright (C) 1997 Takashi Hamada * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Takashi Hamada * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifdef DEBUG #ifndef ADB_DEBUG #define ADB_DEBUG #endif #endif /* #define PM_GRAB_SI 1 */ #include #include #include #include #include #include #include #include #include /* hardware dependent values */ #define ADBDelay 100 /* XXX */ /* define the types of the Power Manager */ #define PM_HW_UNKNOWN 0x00 /* don't know */ #define PM_HW_PB5XX 0x02 /* PowerBook Duo and 5XX series */ /* useful macros */ #define PM_SR() read_via_reg(VIA1, vSR) #define PM_VIA_INTR_ENABLE() write_via_reg(VIA1, vIER, 0x90) #define PM_VIA_INTR_DISABLE() write_via_reg(VIA1, vIER, 0x10) #define PM_VIA_CLR_INTR() write_via_reg(VIA1, vIFR, 0x90) #if 0 #define PM_SET_STATE_ACKON() via_reg_or(VIA2, vBufB, 0x04) #define PM_SET_STATE_ACKOFF() via_reg_and(VIA2, vBufB, ~0x04) #define PM_IS_ON (0x02 == (read_via_reg(VIA2, vBufB) & 0x02)) #define PM_IS_OFF (0x00 == (read_via_reg(VIA2, vBufB) & 0x02)) #else #define PM_SET_STATE_ACKON() via_reg_or(VIA2, vBufB, 0x10) #define PM_SET_STATE_ACKOFF() via_reg_and(VIA2, vBufB, ~0x10) #define PM_IS_ON (0x08 == (read_via_reg(VIA2, vBufB) & 0x08)) #define PM_IS_OFF (0x00 == (read_via_reg(VIA2, vBufB) & 0x08)) #endif /* * Variables for internal use */ int pmHardware = PM_HW_UNKNOWN; u_short pm_existent_ADB_devices = 0x0; /* each bit expresses the existent ADB device */ u_int pm_LCD_brightness = 0x0; u_int pm_LCD_contrast = 0x0; /* these values shows that number of data returned after 'send' cmd is sent */ signed char pm_send_cmd_type[] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0x01, 0x01, -1, -1, -1, -1, -1, -1, 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 0x00, -1, -1, -1, -1, -1, -1, -1, 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 0x01, 0x01, -1, -1, -1, -1, -1, -1, 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 0x02, -1, -1, -1, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 0x00, 0x00, -1, -1, -1, -1, 0x04, 0x04, 0x04, -1, 0x00, -1, -1, -1, -1, -1, 0x00, -1, -1, -1, -1, -1, -1, -1, 0x01, 0x02, -1, -1, -1, -1, -1, -1, 0x00, 0x00, -1, -1, -1, -1, -1, -1, 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0x00, -1, -1, -1, -1, -1, -1, -1, 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, -1, 0x04, 0x00, -1, -1, -1, -1, -1, 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }; /* these values shows that number of data returned after 'receive' cmd is sent */ signed char pm_receive_cmd_type[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, -1, -1, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, -1, -1, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, -1, -1, -1, -1, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, -1, -1, -1, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, -1, -1, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, -1, -1, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 0x02, -1, -1, -1, -1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, -1, -1, -1, -1, -1, -1, }; /* * Define the private functions */ /* for debugging */ #ifdef ADB_DEBUG void pm_printerr(char *, int, int, char *); #endif int pm_wait_busy(int); int pm_wait_free(int); /* these functions are for the PB Duo series and the PB 5XX series */ int pm_receive_pm2(u_char *); int pm_send_pm2(u_char); int pm_pmgrop_pm2(PMData *); void pm_intr_pm2(void); /* this function is MRG-Based (for testing) */ int pm_pmgrop_mrg(PMData *); /* these functions also use the variables of adb_direct.c */ void pm_adb_get_TALK_result(PMData *); void pm_adb_get_ADB_data(PMData *); /* * These variables are in adb_direct.c. */ extern u_char *adbBuffer; /* pointer to user data area */ extern void *adbCompRout; /* pointer to the completion routine */ extern void *adbCompData; /* pointer to the completion routine data */ extern int adbWaiting; /* waiting for return data from the device */ extern int adbWaitingCmd; /* ADB command we are waiting for */ extern int adbStarting; /* doing ADB reinit, so do "polling" differently */ #define ADB_MAX_MSG_LENGTH 16 #define ADB_MAX_HDR_LENGTH 8 struct adbCommand { u_char header[ADB_MAX_HDR_LENGTH]; /* not used yet */ u_char data[ADB_MAX_MSG_LENGTH]; /* packet data only */ u_char *saveBuf; /* where to save result */ u_char *compRout; /* completion routine pointer */ u_char *compData; /* completion routine data pointer */ u_int cmd; /* the original command for this data */ u_int unsol; /* 1 if packet was unsolicited */ u_int ack_only; /* 1 for no special processing */ }; extern void adb_pass_up(struct adbCommand *); #ifdef ADB_DEBUG /* * This function dumps contents of the PMData */ void pm_printerr(ttl, rval, num, data) char *ttl; int rval; int num; char *data; { int i; printf("pm: %s:%04x %02x ", ttl, rval, num); for (i = 0; i < num; i++) printf("%02x ", data[i]); printf("\n"); } #endif /* * Check the hardware type of the Power Manager */ void pm_setup_adb() { pmHardware = PM_HW_PB5XX; /* XXX */ } /* * Check the existent ADB devices */ void pm_check_adb_devices(int id) { u_short ed = 0x1; ed <<= id; pm_existent_ADB_devices |= ed; } /* * Wait until PM IC is busy */ int pm_wait_busy(int delay) { while (PM_IS_ON) { #ifdef PM_GRAB_SI (void)intr_dispatch(0x70); #endif if ((--delay) < 0) return 1; /* timeout */ } return 0; } /* * Wait until PM IC is free */ int pm_wait_free(int delay) { while (PM_IS_OFF) { #ifdef PM_GRAB_SI (void)intr_dispatch(0x70); #endif if ((--delay) < 0) return 0; /* timeout */ } return 1; } /* * Functions for the PB Duo series and the PB 5XX series */ /* * Receive data from PM for the PB Duo series and the PB 5XX series */ int pm_receive_pm2(u_char *data) { int i; int rval; rval = 0xffffcd34; switch (1) { default: /* set VIA SR to input mode */ via_reg_or(VIA1, vACR, 0x0c); via_reg_and(VIA1, vACR, ~0x10); i = PM_SR(); PM_SET_STATE_ACKOFF(); if (pm_wait_busy((int)ADBDelay*32) != 0) break; /* timeout */ PM_SET_STATE_ACKON(); rval = 0xffffcd33; if (pm_wait_free((int)ADBDelay*32) == 0) break; /* timeout */ *data = PM_SR(); rval = 0; break; } PM_SET_STATE_ACKON(); via_reg_or(VIA1, vACR, 0x1c); return rval; } /* * Send data to PM for the PB Duo series and the PB 5XX series */ int pm_send_pm2(data) u_char data; { int rval; via_reg_or(VIA1, vACR, 0x1c); write_via_reg(VIA1, vSR, data); /* PM_SR() = data; */ PM_SET_STATE_ACKOFF(); rval = 0xffffcd36; if (pm_wait_busy((int)ADBDelay*32) != 0) { PM_SET_STATE_ACKON(); via_reg_or(VIA1, vACR, 0x1c); return rval; } PM_SET_STATE_ACKON(); rval = 0xffffcd35; if (pm_wait_free((int)ADBDelay*32) != 0) rval = 0; PM_SET_STATE_ACKON(); via_reg_or(VIA1, vACR, 0x1c); return rval; } /* * My PMgrOp routine for the PB Duo series and the PB 5XX series */ int pm_pmgrop_pm2(PMData *pmdata) { int i; int s; u_char via1_vIER; int rval = 0; int num_pm_data = 0; u_char pm_cmd; short pm_num_rx_data; u_char pm_data; u_char *pm_buf; s = splhigh(); /* disable all interrupts but PM */ via1_vIER = 0x10; via1_vIER &= read_via_reg(VIA1, vIER); write_via_reg(VIA1, vIER, via1_vIER); if (via1_vIER != 0x0) via1_vIER |= 0x80; switch (pmdata->command) { default: /* wait until PM is free */ pm_cmd = (u_char)(pmdata->command & 0xff); rval = 0xcd38; if (pm_wait_free(ADBDelay * 4) == 0) break; /* timeout */ /* send PM command */ if ((rval = pm_send_pm2((u_char)(pm_cmd & 0xff)))) break; /* timeout */ /* send number of PM data */ num_pm_data = pmdata->num_data; if (pm_send_cmd_type[pm_cmd] < 0) { if ((rval = pm_send_pm2((u_char)(num_pm_data & 0xff))) != 0) break; /* timeout */ pmdata->command = 0; } /* send PM data */ pm_buf = (u_char *)pmdata->s_buf; for (i = 0 ; i < num_pm_data; i++) if ((rval = pm_send_pm2(pm_buf[i])) != 0) break; /* timeout */ if (i != num_pm_data) break; /* timeout */ /* check if PM will send me data */ pm_num_rx_data = pm_receive_cmd_type[pm_cmd]; pmdata->num_data = pm_num_rx_data; if (pm_num_rx_data == 0) { rval = 0; break; /* no return data */ } /* receive PM command */ pm_data = pmdata->command; pm_num_rx_data--; if (pm_num_rx_data == 0) if ((rval = pm_receive_pm2(&pm_data)) != 0) { rval = 0xffffcd37; break; } pmdata->command = pm_data; /* receive number of PM data */ if (pm_num_rx_data < 0) { if ((rval = pm_receive_pm2(&pm_data)) != 0) break; /* timeout */ num_pm_data = pm_data; } else num_pm_data = pm_num_rx_data; pmdata->num_data = num_pm_data; /* receive PM data */ pm_buf = (u_char *)pmdata->r_buf; for (i = 0; i < num_pm_data; i++) { if ((rval = pm_receive_pm2(&pm_data)) != 0) break; /* timeout */ pm_buf[i] = pm_data; } rval = 0; } /* restore former value */ write_via_reg(VIA1, vIER, via1_vIER); splx(s); return rval; } /* * My PM interrupt routine for the PB Duo series and the PB 5XX series */ void pm_intr_pm2() { int s; int rval; PMData pmdata; s = splhigh(); PM_VIA_CLR_INTR(); /* clear VIA1 interrupt */ /* ask PM what happend */ pmdata.command = 0x78; pmdata.num_data = 0; pmdata.s_buf = &pmdata.data[2]; pmdata.r_buf = &pmdata.data[2]; rval = pm_pmgrop_pm2(&pmdata); if (rval != 0) { #ifdef ADB_DEBUG if (adb_debug) printf("pm: PM is not ready. error code: %08x\n", rval); #endif splx(s); return; } switch ((u_int)(pmdata.data[2] & 0xff)) { case 0x00: /* 1 sec interrupt? */ break; case PMU_INT_TICK: /* 1 sec interrupt? */ break; case PMU_INT_SNDBRT: /* Brightness/Contrast button on LCD panel */ break; case PMU_INT_ADB: /* ADB data requested by TALK command */ case PMU_INT_ADB|PMU_INT_ADB_AUTO: pm_adb_get_TALK_result(&pmdata); break; case 0x16: /* ADB device event */ case 0x18: case 0x1e: case PMU_INT_WAKEUP: pm_adb_get_ADB_data(&pmdata); break; default: #ifdef ADB_DEBUG if (adb_debug) pm_printerr("driver does not support this event.", pmdata.data[2], pmdata.num_data, pmdata.data); #endif break; } splx(s); } /* * My PMgrOp routine */ int pmgrop(PMData *pmdata) { switch (pmHardware) { case PM_HW_PB5XX: return (pm_pmgrop_pm2(pmdata)); default: /* return (pmgrop_mrg(pmdata)); */ return 1; } } /* * My PM interrupt routine */ void pm_intr() { switch (pmHardware) { case PM_HW_PB5XX: pm_intr_pm2(); break; default: break; } } /* * Synchronous ADBOp routine for the Power Manager */ int pm_adb_op(u_char *buffer, void *compRout, void *data, int command) { int i; int s; int rval; int ndelay; int waitfor; /* interrupts to poll for */ PMData pmdata; struct adbCommand packet; if (adbWaiting == 1) return 1; s = splhigh(); write_via_reg(VIA1, vIER, 0x10); adbBuffer = buffer; adbCompRout = compRout; adbCompData = data; pmdata.command = 0x20; pmdata.s_buf = pmdata.data; pmdata.r_buf = pmdata.data; /* * if the command is LISTEN, * add number of ADB data to number of PM data */ if ((command & 0xc) == 0x8) { if (buffer != (u_char *)0) pmdata.num_data = buffer[0] + 3; } else pmdata.num_data = 3; if (command == PMU_RESET_ADB) waitfor = PMU_INT_ADB_AUTO | PMU_INT_ADB; else waitfor = PMU_INT_ALL; pmdata.data[0] = (u_char)(command & 0xff); pmdata.data[1] = 0; /* if the command is LISTEN, copy ADB data to PM buffer */ if ((command & 0xc) == 0x8) { if ((buffer != (u_char *)0) && (buffer[0] <= 24)) { pmdata.data[2] = buffer[0]; /* number of data */ for (i = 0; i < buffer[0]; i++) pmdata.data[3 + i] = buffer[1 + i]; } else pmdata.data[2] = 0; } else pmdata.data[2] = 0; if ((command & 0xc) != 0xc) { /* if the command is not TALK */ /* set up stuff for adb_pass_up */ packet.data[0] = 1 + pmdata.data[2]; packet.data[1] = command; for (i = 0; i < pmdata.data[2]; i++) packet.data[i+2] = pmdata.data[i+3]; packet.saveBuf = adbBuffer; packet.compRout = adbCompRout; packet.compData = adbCompData; packet.cmd = command; packet.unsol = 0; packet.ack_only = 1; adb_polling = 1; adb_pass_up(&packet); adb_polling = 0; } rval = pmgrop(&pmdata); if (rval != 0) { splx(s); return 1; } delay (1000); adbWaiting = 1; adbWaitingCmd = command; PM_VIA_INTR_ENABLE(); /* wait until the PM interrupt is occurred */ ndelay = 0x8000; while (adbWaiting == 1) { if (read_via_reg(VIA1, vIFR) & waitfor) pm_intr(); #ifdef PM_GRAB_SI (void)intr_dispatch(0x70); #endif if ((--ndelay) < 0) { splx(s); return 1; } delay(10); } /* this command enables the interrupt by operating ADB devices */ pmdata.command = 0x20; pmdata.num_data = 4; pmdata.s_buf = pmdata.data; pmdata.r_buf = pmdata.data; pmdata.data[0] = 0x00; pmdata.data[1] = 0x86; /* magic spell for awaking the PM */ pmdata.data[2] = 0x00; pmdata.data[3] = 0x0c; /* each bit may express the existent ADB device */ rval = pmgrop(&pmdata); splx(s); return rval; } void pm_adb_get_TALK_result(PMData *pmdata) { int i; struct adbCommand packet; /* set up data for adb_pass_up */ packet.data[0] = pmdata->num_data-1; packet.data[1] = pmdata->data[3]; for (i = 0; i data[i+4]; packet.saveBuf = adbBuffer; packet.compRout = adbCompRout; packet.compData = adbCompData; packet.unsol = 0; packet.ack_only = 0; adb_polling = 1; adb_pass_up(&packet); adb_polling = 0; adbWaiting = 0; adbBuffer = (long)0; adbCompRout = (long)0; adbCompData = (long)0; } void pm_adb_get_ADB_data(PMData *pmdata) { int i; struct adbCommand packet; /* set up data for adb_pass_up */ packet.data[0] = pmdata->num_data-1; /* number of raw data */ packet.data[1] = pmdata->data[3]; /* ADB command */ for (i = 0; i data[i+4]; packet.unsol = 1; packet.ack_only = 0; adb_pass_up(&packet); } void pm_adb_restart() { PMData p; p.command = PMU_RESET_CPU; p.num_data = 0; p.s_buf = p.data; p.r_buf = p.data; pmgrop(&p); } void pm_adb_poweroff() { PMData p; bzero(&p, sizeof p); p.command = PMU_POWER_OFF; p.num_data = 4; p.s_buf = p.data; p.r_buf = p.data; strlcpy(p.data, "MATT", sizeof p.data); pmgrop(&p); } void pm_read_date_time(time_t *time) { PMData p; p.command = PMU_READ_RTC; p.num_data = 0; p.s_buf = p.data; p.r_buf = p.data; pmgrop(&p); bcopy(p.data, time, 4); } void pm_set_date_time(time_t time) { PMData p; p.command = PMU_SET_RTC; p.num_data = 4; p.s_buf = p.r_buf = p.data; bcopy(&time, p.data, 4); pmgrop(&p); } int pm_read_brightness() { PMData p; p.command = PMU_READ_BRIGHTNESS; p.num_data = 1; /* XXX why 1? */ p.s_buf = p.r_buf = p.data; p.data[0] = 0; pmgrop(&p); return p.data[0]; } void pm_set_brightness(int val) { PMData p; val = 0x7f - val / 2; if (val < 0x08) val = 0x08; if (val > 0x78) val = 0x78; p.command = PMU_SET_BRIGHTNESS; p.num_data = 1; p.s_buf = p.r_buf = p.data; p.data[0] = val; pmgrop(&p); } void pm_init_brightness() { int val; val = pm_read_brightness(); pm_set_brightness(val); } void pm_eject_pcmcia(int slot) { PMData p; if (slot != 0 && slot != 1) return; p.command = PMU_EJECT_PCMCIA; p.num_data = 1; p.s_buf = p.r_buf = p.data; p.data[0] = 5 + slot; /* XXX */ pmgrop(&p); } /* * Thanks to Paul Mackerras and Fabio Riccardi's Linux implementation * for a clear description of the PMU results. */ int pm_battery_info(int battery, struct pmu_battery_info *info) { PMData p; p.command = PMU_SMART_BATTERY_STATE; p.num_data = 1; p.s_buf = p.r_buf = p.data; p.data[0] = battery + 1; pmgrop(&p); info->flags = p.data[1]; switch (p.data[0]) { case 3: case 4: info->cur_charge = p.data[2]; info->max_charge = p.data[3]; info->draw = *((signed char *)&p.data[4]); info->voltage = p.data[5]; break; case 5: info->cur_charge = ((p.data[2] << 8) | (p.data[3])); info->max_charge = ((p.data[4] << 8) | (p.data[5])); info->draw = *((signed short *)&p.data[6]); info->voltage = ((p.data[8] << 8) | (p.data[7])); break; default: /* XXX - Error condition */ info->cur_charge = 0; info->max_charge = 0; info->draw = 0; info->voltage = 0; break; } return 1; } int pm_read_nvram(int addr) { PMData p; p.command = PMU_READ_NVRAM; p.num_data = 2; p.s_buf = p.r_buf = p.data; p.data[0] = addr >> 8; p.data[1] = addr; pmgrop(&p); return p.data[0]; } void pm_write_nvram(int addr, int val) { PMData p; p.command = PMU_WRITE_NVRAM; p.num_data = 3; p.s_buf = p.r_buf = p.data; p.data[0] = addr >> 8; p.data[1] = addr; p.data[2] = val; pmgrop(&p); }