Ejemplo n.º 1
0
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, &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, &reg, 1);
	device_printf(dev, "%s powered by %s\n", name, pwr[(reg>>2)&0x03]);

	config_intrhook_disestablish(&sc->enum_hook);
}
Ejemplo n.º 2
0
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);
	}
}
Ejemplo n.º 3
0
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 *)&reg0, 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 *)&reg1, 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 *)&reg2, 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 *)&reg3, 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]);
}
Ejemplo n.º 4
0
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 *)&reg2, 1);
	reg2.voreg = vo;
	am335x_pmic_write(dev, TPS65217_CHGCONFIG2_REG, (uint8_t *)&reg2, 1);
}
Ejemplo n.º 5
0
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 *)&reg, 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 *)&reg, 1);
	/* Toggle pmic_pwr_enable to shutdown the PMIC. */
	am335x_rtc_pmic_pwr_toggle();
}
Ejemplo n.º 6
0
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, &reg, 1);
	am335x_pmic_read(dev, TPS65217_INT_REG, &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");
	}
}