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>
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()
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()
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()
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()
342 	/* Main charging control GPIOs */  in tosa_bat_probe()
352 	/* Per-battery output check (routes battery voltage to ADC) */  in tosa_bat_probe()
353 	tosa_bat_main.gpiod_bat = devm_gpiod_get(dev, "main battery", GPIOD_OUT_LOW);  in tosa_bat_probe()
356 				     "no main battery GPIO\n");  in tosa_bat_probe()
357 	tosa_bat_jacket.gpiod_bat = devm_gpiod_get(dev, "jacket battery", GPIOD_OUT_LOW);  in tosa_bat_probe()
360 				     "no jacket battery GPIO\n");  in tosa_bat_probe()
361 	tosa_bat_bu.gpiod_bat = devm_gpiod_get(dev, "backup battery", GPIOD_OUT_LOW);  in tosa_bat_probe()
364 				     "no backup battery GPIO\n");  in tosa_bat_probe()
366 	/* Battery full detect GPIOs (using PXA SoC GPIOs) */  in tosa_bat_probe()
367 	tosa_bat_main.gpiod_full = devm_gpiod_get(dev, "main battery full", GPIOD_IN);  in tosa_bat_probe()
370 				     "no main battery full GPIO\n");  in tosa_bat_probe()
371 	tosa_bat_jacket.gpiod_full = devm_gpiod_get(dev, "jacket battery full", GPIOD_IN);  in tosa_bat_probe()
374 				     "no jacket battery full GPIO\n");  in tosa_bat_probe()
376 	/* Battery temperature GPIOs (routes thermistor voltage to ADC) */  in tosa_bat_probe()
377 	tosa_bat_main.gpiod_temp = devm_gpiod_get(dev, "main battery temp", GPIOD_OUT_LOW);  in tosa_bat_probe()
380 				     "no main battery temp GPIO\n");  in tosa_bat_probe()
381 	tosa_bat_jacket.gpiod_temp = devm_gpiod_get(dev, "jacket battery temp", GPIOD_OUT_LOW);  in tosa_bat_probe()
384 				     "no jacket battery temp GPIO\n");  in tosa_bat_probe()
386 	/* Jacket detect GPIO */  in tosa_bat_probe()
387 	jacket_detect = devm_gpiod_get(dev, "jacket detect", GPIOD_IN);  in tosa_bat_probe()
390 				     "no jacket detect GPIO\n");  in tosa_bat_probe()
392 	/* Battery low indication GPIOs (not used, we just request them) */  in tosa_bat_probe()
393 	dummy = devm_gpiod_get(dev, "main battery low", GPIOD_IN);  in tosa_bat_probe()
396 				     "no main battery low GPIO\n");  in tosa_bat_probe()
397 	dummy = devm_gpiod_get(dev, "jacket battery low", GPIOD_IN);  in tosa_bat_probe()
400 				     "no jacket battery low GPIO\n");  in tosa_bat_probe()
402 	/* Battery switch GPIO (not used just requested) */  in tosa_bat_probe()
403 	dummy = devm_gpiod_get(dev, "battery switch", GPIOD_OUT_LOW);  in tosa_bat_probe()
406 				     "no battery switch GPIO\n");  in tosa_bat_probe()
456 				"jacket detect", &tosa_bat_jacket);  in tosa_bat_probe()
499 	.driver.name	= "wm97xx-battery",
511 MODULE_DESCRIPTION("Tosa battery driver");
512 MODULE_ALIAS("platform:wm97xx-battery");