1 // SPDX-License-Identifier: GPL-2.0-only
3  * Battery and Power Management code for the Sharp SL-6000x
17 #include <asm/mach-types.h>
29 	bool (*is_present)(struct tosa_bat *bat);
50 static unsigned long tosa_read_bat(struct tosa_bat *bat)  in tosa_read_bat()  argument
54 	if (!bat->gpiod_bat || bat->adc_bat < 0)  in tosa_read_bat()
58 	gpiod_set_value(bat->gpiod_bat, 1);  in tosa_read_bat()
60 	value = wm97xx_read_aux_adc(dev_get_drvdata(bat->psy->dev.parent),  in tosa_read_bat()
61 			bat->adc_bat);  in tosa_read_bat()
62 	gpiod_set_value(bat->gpiod_bat, 0);  in tosa_read_bat()
65 	value = value * 1000000 / bat->adc_bat_divider;  in tosa_read_bat()
70 static unsigned long tosa_read_temp(struct tosa_bat *bat)  in tosa_read_temp()  argument
74 	if (!bat->gpiod_temp || bat->adc_temp < 0)  in tosa_read_temp()
78 	gpiod_set_value(bat->gpiod_temp, 1);  in tosa_read_temp()
80 	value = wm97xx_read_aux_adc(dev_get_drvdata(bat->psy->dev.parent),  in tosa_read_temp()
81 			bat->adc_temp);  in tosa_read_temp()
82 	gpiod_set_value(bat->gpiod_temp, 0);  in tosa_read_temp()
85 	value = value * 10000 / bat->adc_temp_divider;  in tosa_read_temp()
95 	struct tosa_bat *bat = power_supply_get_drvdata(psy);  in tosa_bat_get_property()  local
97 	if (bat->is_present && !bat->is_present(bat)  in tosa_bat_get_property()
99 		return -ENODEV;  in tosa_bat_get_property()
104 		val->intval = bat->status;  in tosa_bat_get_property()
107 		val->intval = bat->technology;  in tosa_bat_get_property()
110 		val->intval = tosa_read_bat(bat);  in tosa_bat_get_property()
113 		if (bat->full_chrg == -1)  in tosa_bat_get_property()
114 			val->intval = bat->bat_max;  in tosa_bat_get_property()
116 			val->intval = bat->full_chrg;  in tosa_bat_get_property()
119 		val->intval = bat->bat_max;  in tosa_bat_get_property()
122 		val->intval = bat->bat_min;  in tosa_bat_get_property()
125 		val->intval = tosa_read_temp(bat);  in tosa_bat_get_property()
128 		val->intval = bat->is_present ? bat->is_present(bat) : 1;  in tosa_bat_get_property()
131 		ret = -EINVAL;  in tosa_bat_get_property()
137 static bool tosa_jacket_bat_is_present(struct tosa_bat *bat)  in tosa_jacket_bat_is_present()  argument
154 static void tosa_bat_update(struct tosa_bat *bat)  in tosa_bat_update()  argument
157 	struct power_supply *psy = bat->psy;  in tosa_bat_update()
159 	mutex_lock(&bat->work_lock);  in tosa_bat_update()
161 	old = bat->status;  in tosa_bat_update()
163 	if (bat->is_present && !bat->is_present(bat)) {  in tosa_bat_update()
164 		printk(KERN_NOTICE "%s not present\n", psy->desc->name);  in tosa_bat_update()
165 		bat->status = POWER_SUPPLY_STATUS_UNKNOWN;  in tosa_bat_update()
166 		bat->full_chrg = -1;  in tosa_bat_update()
168 		if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) {  in tosa_bat_update()
169 			gpiod_set_value(bat->gpiod_charge_off, 0);  in tosa_bat_update()
173 		if (gpiod_get_value(bat->gpiod_full)) {  in tosa_bat_update()
175 					bat->full_chrg == -1)  in tosa_bat_update()
176 				bat->full_chrg = tosa_read_bat(bat);  in tosa_bat_update()
178 			gpiod_set_value(bat->gpiod_charge_off, 1);  in tosa_bat_update()
179 			bat->status = POWER_SUPPLY_STATUS_FULL;  in tosa_bat_update()
181 			gpiod_set_value(bat->gpiod_charge_off, 0);  in tosa_bat_update()
182 			bat->status = POWER_SUPPLY_STATUS_CHARGING;  in tosa_bat_update()
185 		gpiod_set_value(bat->gpiod_charge_off, 1);  in tosa_bat_update()
186 		bat->status = POWER_SUPPLY_STATUS_DISCHARGING;  in tosa_bat_update()
189 	if (old != bat->status)  in tosa_bat_update()
192 	mutex_unlock(&bat->work_lock);  in tosa_bat_update()
222 	.name		= "main-battery",
232 	.name		= "jacket-battery",
241 	.name		= "backup-battery",
251 	.full_chrg = -1,
272 	.full_chrg = -1,
294 	.full_chrg = -1,
307 	.adc_temp = -1,
308 	.adc_temp_divider = -1,
336 	struct device *dev = &pdev->dev;  in tosa_bat_probe()
340 		return -ENODEV;  in tosa_bat_probe()
352 	/* Per-battery output check (routes battery voltage to ADC) */  in tosa_bat_probe()
499 	.driver.name	= "wm97xx-battery",
512 MODULE_ALIAS("platform:wm97xx-battery");