1 // SPDX-License-Identifier: GPL-2.0-only
5  *	Copyright © 2006-2010  David Woodhouse <dwmw2@infradead.org>
19 #include <linux/olpc-ec.h>
22 #define EC_BAT_VOLTAGE	0x10	/* uint16_t,	*9.76/32,    mV   */
77 		val->intval = !!(status & BAT_STAT_AC);  in olpc_ac_get_prop()
80 		ret = -EINVAL;  in olpc_ac_get_prop()
101 	if (data->new_proto) {  in olpc_bat_get_status()
103 			val->intval = POWER_SUPPLY_STATUS_CHARGING;  in olpc_bat_get_status()
105 			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;  in olpc_bat_get_status()
107 			val->intval = POWER_SUPPLY_STATUS_FULL;  in olpc_bat_get_status()
109 			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;  in olpc_bat_get_status()
113 			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;  in olpc_bat_get_status()
115 			val->intval = POWER_SUPPLY_STATUS_FULL;  in olpc_bat_get_status()
117 			val->intval = POWER_SUPPLY_STATUS_CHARGING;  in olpc_bat_get_status()
134 		val->intval = POWER_SUPPLY_HEALTH_GOOD;  in olpc_bat_get_health()
138 		val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;  in olpc_bat_get_health()
142 		val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;  in olpc_bat_get_health()
149 		val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;  in olpc_bat_get_health()
154 		ret = -EIO;  in olpc_bat_get_health()
172 		val->strval = "Gold Peak";  in olpc_bat_get_mfr()
175 		val->strval = "BYD";  in olpc_bat_get_mfr()
178 		val->strval = "Unknown";  in olpc_bat_get_mfr()
197 		val->intval = POWER_SUPPLY_TECHNOLOGY_NiMH;  in olpc_bat_get_tech()
200 		val->intval = POWER_SUPPLY_TECHNOLOGY_LiFe;  in olpc_bat_get_tech()
203 		val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;  in olpc_bat_get_tech()
231 			val->intval = 3000000*.8;  in olpc_bat_get_charge_full_design()
234 			return -EIO;  in olpc_bat_get_charge_full_design()
242 			val->intval = 2800000;  in olpc_bat_get_charge_full_design()
245 			return -EIO;  in olpc_bat_get_charge_full_design()
250 		return -EIO;  in olpc_bat_get_charge_full_design()
270 	val->intval = soc * (full.intval / 100);  in olpc_bat_get_charge_now()
296 			val->intval = 6000000;  in olpc_bat_get_voltage_max_design()
299 			return -EIO;  in olpc_bat_get_voltage_max_design()
306 			val->intval = 6400000;  in olpc_bat_get_voltage_max_design()
309 			val->intval = 6500000;  in olpc_bat_get_voltage_max_design()
312 			return -EIO;  in olpc_bat_get_voltage_max_design()
317 		return -EIO;  in olpc_bat_get_voltage_max_design()
325 	if (data->little_endian)  in ecword_to_cpu()
348 	/* Theoretically there's a race here -- the battery could be  in olpc_bat_get_property()
350 	   then we query for some other property of the now-absent battery.  in olpc_bat_get_property()
351 	   It doesn't matter though -- the EC will return the last-known  in olpc_bat_get_property()
356 		return -ENODEV;  in olpc_bat_get_property()
366 			val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;  in olpc_bat_get_property()
368 			val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;  in olpc_bat_get_property()
370 			val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;  in olpc_bat_get_property()
373 		val->intval = !!(ec_byte & (BAT_STAT_PRESENT |  in olpc_bat_get_property()
379 			val->intval = POWER_SUPPLY_HEALTH_DEAD;  in olpc_bat_get_property()
403 		val->intval = ecword_to_cpu(data, ec_word) * 9760L / 32;  in olpc_bat_get_property()
411 		val->intval = ecword_to_cpu(data, ec_word) * 15625L / 120;  in olpc_bat_get_property()
417 		val->intval = ec_byte;  in olpc_bat_get_property()
421 			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL;  in olpc_bat_get_property()
423 			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW;  in olpc_bat_get_property()
425 			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;  in olpc_bat_get_property()
442 		val->intval = ecword_to_cpu(data, ec_word) * 10 / 256;  in olpc_bat_get_property()
449 		val->intval = (int)ecword_to_cpu(data, ec_word) * 10 / 256;  in olpc_bat_get_property()
456 		val->intval = ecword_to_cpu(data, ec_word) * 6250 / 15;  in olpc_bat_get_property()
463 		sprintf(data->bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf));  in olpc_bat_get_property()
464 		val->strval = data->bat_serial;  in olpc_bat_get_property()
472 		ret = -EINVAL;  in olpc_bat_get_property()
501 /* XO-1.5 does not have ambient temperature property */
527 #define EEPROM_SIZE	(EEPROM_END - EEPROM_START)
540 			pr_err("olpc-battery: "  in olpc_bat_eeprom_read()
541 			       "EC_BAT_EEPROM cmd @ 0x%x failed - %d!\n",  in olpc_bat_eeprom_read()
543 			return -EIO;  in olpc_bat_eeprom_read()
618 	if (device_may_wakeup(&data->olpc_ac->dev))  in olpc_battery_suspend()
623 	if (device_may_wakeup(&data->olpc_bat->dev))  in olpc_battery_suspend()
643 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);  in olpc_battery_probe()
645 		return -ENOMEM;  in olpc_battery_probe()
653 	np = of_find_compatible_node(NULL, NULL, "olpc,xo1.75-ec");  in olpc_battery_probe()
657 		data->new_proto = true;  in olpc_battery_probe()
658 		data->little_endian = true;  in olpc_battery_probe()
661 		data->new_proto = true;  in olpc_battery_probe()
669 		return -ENXIO;  in olpc_battery_probe()
678 	ac_psy_cfg.of_node = pdev->dev.of_node;  in olpc_battery_probe()
681 	data->olpc_ac = devm_power_supply_register(&pdev->dev, &olpc_ac_desc,  in olpc_battery_probe()
683 	if (IS_ERR(data->olpc_ac))  in olpc_battery_probe()
684 		return PTR_ERR(data->olpc_ac);  in olpc_battery_probe()
686 	if (of_device_is_compatible(pdev->dev.of_node, "olpc,xo1.5-battery")) {  in olpc_battery_probe()
687 		/* XO-1.5 */  in olpc_battery_probe()
691 		/* XO-1 */  in olpc_battery_probe()
696 	bat_psy_cfg.of_node = pdev->dev.of_node;  in olpc_battery_probe()
700 	data->olpc_bat = devm_power_supply_register(&pdev->dev, &olpc_bat_desc,  in olpc_battery_probe()
702 	if (IS_ERR(data->olpc_bat))  in olpc_battery_probe()
703 		return PTR_ERR(data->olpc_bat);  in olpc_battery_probe()
706 		device_set_wakeup_capable(&data->olpc_ac->dev, true);  in olpc_battery_probe()
707 		device_set_wakeup_capable(&data->olpc_bat->dev, true);  in olpc_battery_probe()
714 	{ .compatible = "olpc,xo1-battery" },
715 	{ .compatible = "olpc,xo1.5-battery" },
722 		.name = "olpc-battery",