static void
am335x_pmic_start(void *xdev)
{
struct am335x_pmic_softc *sc;
device_t dev = (device_t)xdev;
uint8_t reg;
char name[20];
char pwr[4][11] = {"Unknown", "USB", "AC", "USB and AC"};
sc = device_get_softc(dev);
am335x_pmic_read(dev, TPS65217_CHIPID_REG, ®, 1);
switch (reg>>4) {
case TPS65217A:
sprintf(name, "TPS65217A ver 1.%u", reg & 0xF);
break;
case TPS65217B:
sprintf(name, "TPS65217B ver 1.%u", reg & 0xF);
break;
default:
sprintf(name, "Unknown PMIC");
}
am335x_pmic_read(dev, TPS65217_STATUS_REG, ®, 1);
device_printf(dev, "%s powered by %s\n", name, pwr[(reg>>2)&0x03]);
config_intrhook_disestablish(&sc->enum_hook);
}
static void
am335x_pmic_intr(void *arg)
{
struct am335x_pmic_softc *sc = (struct am335x_pmic_softc *)arg;
struct tps65217_status_reg status_reg;
struct tps65217_int_reg int_reg;
int rv;
char notify_buf[16];
THREAD_SLEEPING_OK();
rv = am335x_pmic_read(sc->sc_dev, TPS65217_INT_REG, (uint8_t *)&int_reg, 1);
if (rv != 0) {
device_printf(sc->sc_dev, "Cannot read interrupt register\n");
THREAD_NO_SLEEPING();
return;
}
rv = am335x_pmic_read(sc->sc_dev, TPS65217_STATUS_REG, (uint8_t *)&status_reg, 1);
if (rv != 0) {
device_printf(sc->sc_dev, "Cannot read status register\n");
THREAD_NO_SLEEPING();
return;
}
THREAD_NO_SLEEPING();
if (int_reg.pbi && status_reg.pb)
shutdown_nice(RB_POWEROFF);
if (int_reg.aci) {
snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x",
status_reg.acpwr);
devctl_notify_f("ACPI", "ACAD", "power", notify_buf, M_NOWAIT);
}
}
static void
am335x_pmic_dump_chgconfig(device_t dev)
{
struct tps65217_chgconfig0_reg reg0;
struct tps65217_chgconfig1_reg reg1;
struct tps65217_chgconfig2_reg reg2;
struct tps65217_chgconfig3_reg reg3;
const char *e_d[] = {"enabled", "disabled"};
const char *d_e[] = {"disabled", "enabled"};
const char *i_a[] = {"inactive", "active"};
const char *f_t[] = {"false", "true"};
const char *timer_c[] = {"4h", "5h", "6h", "8h"};
const char *ntc_type_c[] = {"100k", "10k"};
const char *vprechg_c[] = {"2.9V", "2.5V"};
const char *trange_c[] = {"0-45 C", "0-60 C"};
const char *termif_c[] = {"2.5%", "7.5%", "15%", "18%"};
const char *pchrgt_c[] = {"30 min", "60 min"};
const char *dppmth_c[] = {"3.50V", "3.75V", "4.00V", "4.25V"};
const char *ichrg_c[] = {"300mA", "400mA", "500mA", "700mA"};
am335x_pmic_read(dev, TPS65217_CHGCONFIG0_REG, (uint8_t *)®0, 1);
device_printf(dev, " BAT TEMP/NTC ERROR: %s\n", f_t[reg0.battemp]);
device_printf(dev, " Pre-charge timer time-out: %s\n", f_t[reg0.pchgtout]);
device_printf(dev, " Charge timer time-out: %s\n", f_t[reg0.chgtout]);
device_printf(dev, " Charger active: %s\n", f_t[reg0.active]);
device_printf(dev, " Termination current detected: %s\n", f_t[reg0.termi]);
device_printf(dev, " Thermal suspend: %s\n", f_t[reg0.tsusp]);
device_printf(dev, " DPPM active: %s\n", f_t[reg0.dppm]);
device_printf(dev, " Thermal regulation: %s\n", i_a[reg0.treg]);
am335x_pmic_read(dev, TPS65217_CHGCONFIG1_REG, (uint8_t *)®1, 1);
device_printf(dev, " Charger: %s\n", d_e[reg1.chg_en]);
device_printf(dev, " Suspend charge: %s\n", i_a[reg1.susp]);
device_printf(dev, " Charge termination: %s\n", e_d[reg1.term]);
device_printf(dev, " Charger reset: %s\n", i_a[reg1.reset]);
device_printf(dev, " NTC TYPE: %s\n", ntc_type_c[reg1.ntc_type]);
device_printf(dev, " Safety timer: %s\n", d_e[reg1.tmr_en]);
device_printf(dev, " Charge safety timer: %s\n", timer_c[reg1.timer]);
am335x_pmic_read(dev, TPS65217_CHGCONFIG2_REG, (uint8_t *)®2, 1);
device_printf(dev, " Charge voltage: %s\n", tps65217_voreg_c[reg2.voreg]);
device_printf(dev, " Pre-charge to fast charge transition voltage: %s\n",
vprechg_c[reg2.vprechg]);
device_printf(dev, " Dynamic timer function: %s\n", d_e[reg2.dyntmr]);
am335x_pmic_read(dev, TPS65217_CHGCONFIG3_REG, (uint8_t *)®3, 1);
device_printf(dev, " Temperature range for charging: %s\n", trange_c[reg3.trange]);
device_printf(dev, " Termination current factor: %s\n", termif_c[reg3.termif]);
device_printf(dev, " Pre-charge time: %s\n", pchrgt_c[reg3.pchrgt]);
device_printf(dev, " Power path DPPM threshold: %s\n", dppmth_c[reg3.dppmth]);
device_printf(dev, " Charge current: %s\n", ichrg_c[reg3.ichrg]);
}
static void
am335x_pmic_setvo(device_t dev, uint8_t vo)
{
struct tps65217_chgconfig2_reg reg2;
am335x_pmic_read(dev, TPS65217_CHGCONFIG2_REG, (uint8_t *)®2, 1);
reg2.voreg = vo;
am335x_pmic_write(dev, TPS65217_CHGCONFIG2_REG, (uint8_t *)®2, 1);
}
static void
am335x_pmic_shutdown(void *xdev, int howto)
{
device_t dev;
struct tps65217_status_reg reg;
if (!(howto & RB_POWEROFF))
return;
dev = (device_t)xdev;
am335x_pmic_read(dev, TPS65217_STATUS_REG, (uint8_t *)®, 1);
/* Set the OFF bit on status register to start the shutdown sequence. */
reg.off = 1;
am335x_pmic_write(dev, TPS65217_STATUS_REG, (uint8_t *)®, 1);
/* Toggle pmic_pwr_enable to shutdown the PMIC. */
am335x_rtc_pmic_pwr_toggle();
}
static void
am335x_pmic_start(void *xdev)
{
struct am335x_pmic_softc *sc;
device_t dev = (device_t)xdev;
struct tps65217_status_reg status_reg;
struct tps65217_chipid_reg chipid_reg;
uint8_t reg, vo;
char name[20];
char pwr[4][11] = {"Battery", "USB", "AC", "USB and AC"};
int rv;
sc = device_get_softc(dev);
am335x_pmic_read(dev, TPS65217_CHIPID_REG, (uint8_t *)&chipid_reg, 1);
switch (chipid_reg.chip) {
case TPS65217A:
sprintf(name, "TPS65217A ver 1.%u", chipid_reg.rev);
break;
case TPS65217B:
sprintf(name, "TPS65217B ver 1.%u", chipid_reg.rev);
break;
case TPS65217C:
sprintf(name, "TPS65217C ver 1.%u", chipid_reg.rev);
break;
case TPS65217D:
sprintf(name, "TPS65217D ver 1.%u", chipid_reg.rev);
break;
default:
sprintf(name, "Unknown PMIC");
}
am335x_pmic_read(dev, TPS65217_STATUS_REG, (uint8_t *)&status_reg, 1);
device_printf(dev, "%s powered by %s\n", name,
pwr[status_reg.usbpwr | (status_reg.acpwr << 1)]);
if (am335x_pmic_vo[0] != '\0') {
for (vo = 0; vo < 4; vo++) {
if (strcmp(tps65217_voreg_c[vo], am335x_pmic_vo) == 0)
break;
}
if (vo == 4) {
device_printf(dev, "WARNING: hw.am335x_pmic.vo=\"%s\""
": unsupported value\n", am335x_pmic_vo);
} else {
am335x_pmic_setvo(dev, vo);
}
}
if (bootverbose || am335x_pmic_bootverbose) {
am335x_pmic_dump_chgconfig(dev);
}
EVENTHANDLER_REGISTER(shutdown_final, am335x_pmic_shutdown, dev,
SHUTDOWN_PRI_LAST);
config_intrhook_disestablish(&sc->enum_hook);
/* Unmask all interrupts and clear pending status */
reg = 0;
am335x_pmic_write(dev, TPS65217_INT_REG, ®, 1);
am335x_pmic_read(dev, TPS65217_INT_REG, ®, 1);
if (sc->sc_irq_res != NULL) {
rv = bus_setup_intr(dev, sc->sc_irq_res,
INTR_TYPE_MISC | INTR_MPSAFE, NULL, am335x_pmic_intr,
sc, &sc->sc_intrhand);
if (rv != 0)
device_printf(dev,
"Unable to setup the irq handler.\n");
}
}
