1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * DA9150 Fuel-Gauge Driver
23 #include <linux/devm-helpers.h>
85 	int soc;  member
100 	da9150_read_qif(fg->da9150, read_addr, size, buf);  in da9150_fg_read_attr()
122 	da9150_write_qif(fg->da9150, write_addr, size, buf);  in da9150_fg_write_attr()
131 	mutex_lock(&fg->io_lock);  in da9150_fg_read_sync_start()
151 		dev_err(fg->dev, "Failed to perform QIF read sync!\n");  in da9150_fg_read_sync_start()
160 	mutex_unlock(&fg->io_lock);  in da9150_fg_read_sync_end()
182 	mutex_lock(&fg->io_lock);  in da9150_fg_write_attr_sync()
197 		dev_err(fg->dev, "Timeout waiting for existing QIF sync!\n");  in da9150_fg_write_attr_sync()
198 		mutex_unlock(&fg->io_lock);  in da9150_fg_write_attr_sync()
215 	mutex_unlock(&fg->io_lock);  in da9150_fg_write_attr_sync()
219 		dev_err(fg->dev, "Error performing QIF sync write for code %d\n",  in da9150_fg_write_attr_sync()
227 	val->intval = da9150_fg_read_attr_sync(fg, DA9150_QIF_SOC_PCT,  in da9150_fg_capacity()
230 	if (val->intval > 100)  in da9150_fg_capacity()
231 		val->intval = 100;  in da9150_fg_capacity()
256 	val->intval = (int) res;  in da9150_fg_current_avg()
266 	val->intval = da9150_fg_read_attr_sync(fg, DA9150_QIF_UAVG,  in da9150_fg_voltage_avg()
269 	res = (u64) (val->intval * 186ULL);  in da9150_fg_voltage_avg()
271 	val->intval = (int) res;  in da9150_fg_voltage_avg()
279 	val->intval = da9150_fg_read_attr_sync(fg, DA9150_QIF_FCC_MAH,  in da9150_fg_charge_full()
282 	val->intval = val->intval * 1000;  in da9150_fg_charge_full()
294 	val->intval = da9150_fg_read_attr_sync(fg, DA9150_QIF_NTCAVG,  in da9150_fg_temp()
297 	val->intval = (val->intval * 10) / 1048576;  in da9150_fg_temp()
314 	struct da9150_fg *fg = dev_get_drvdata(psy->dev.parent);  in da9150_fg_get_prop()
334 		ret = -EINVAL;  in da9150_fg_get_prop()
341 /* Repeated SOC check */
347 	if (val.intval != fg->soc) {  in da9150_fg_soc_changed()
348 		fg->soc = val.intval;  in da9150_fg_soc_changed()
359 	/* Report if SOC has changed */  in da9150_fg_work()
361 		power_supply_changed(fg->battery);  in da9150_fg_work()
363 	schedule_delayed_work(&fg->work, msecs_to_jiffies(fg->interval));  in da9150_fg_work()
366 /* SOC level event configuration */
369 	int soc;  in da9150_fg_soc_event_config()  local
371 	soc = da9150_fg_read_attr_sync(fg, DA9150_QIF_SOC_PCT,  in da9150_fg_soc_event_config()
374 	if (soc > fg->warn_soc) {  in da9150_fg_soc_event_config()
375 		/* If SOC > warn level, set discharge warn level event */  in da9150_fg_soc_event_config()
378 					  fg->warn_soc + 1);  in da9150_fg_soc_event_config()
379 	} else if ((soc <= fg->warn_soc) && (soc > fg->crit_soc)) {  in da9150_fg_soc_event_config()
381 		 * If SOC <= warn level, set discharge crit level event,  in da9150_fg_soc_event_config()
382 		 * and set charge warn level event.  in da9150_fg_soc_event_config()
386 					  fg->crit_soc + 1);  in da9150_fg_soc_event_config()
390 					  fg->warn_soc);  in da9150_fg_soc_event_config()
391 	} else if (soc <= fg->crit_soc) {  in da9150_fg_soc_event_config()
392 		/* If SOC <= crit level, set charge crit level event */  in da9150_fg_soc_event_config()
395 					  fg->crit_soc);  in da9150_fg_soc_event_config()
421 	struct device_node *fg_node = dev->of_node;  in da9150_fg_dt_pdata()
428 	of_property_read_u32(fg_node, "dlg,update-interval",  in da9150_fg_dt_pdata()
429 			     &pdata->update_interval);  in da9150_fg_dt_pdata()
430 	of_property_read_u8(fg_node, "dlg,warn-soc-level",  in da9150_fg_dt_pdata()
431 			    &pdata->warn_soc_lvl);  in da9150_fg_dt_pdata()
432 	of_property_read_u8(fg_node, "dlg,crit-soc-level",  in da9150_fg_dt_pdata()
433 			    &pdata->crit_soc_lvl);  in da9150_fg_dt_pdata()
439 	.name		= "da9150-fg",
448 	struct device *dev = &pdev->dev;  in da9150_fg_probe()
449 	struct da9150 *da9150 = dev_get_drvdata(dev->parent);  in da9150_fg_probe()
456 		return -ENOMEM;  in da9150_fg_probe()
459 	fg->da9150 = da9150;  in da9150_fg_probe()
460 	fg->dev = dev;  in da9150_fg_probe()
462 	mutex_init(&fg->io_lock);  in da9150_fg_probe()
468 	fg->battery = devm_power_supply_register(dev, &fg_desc, NULL);  in da9150_fg_probe()
469 	if (IS_ERR(fg->battery)) {  in da9150_fg_probe()
470 		ret = PTR_ERR(fg->battery);  in da9150_fg_probe()
479 	if (dev->of_node) {  in da9150_fg_probe()
481 		dev->platform_data = fg_pdata;  in da9150_fg_probe()
486 		fg->interval = fg_pdata->update_interval;  in da9150_fg_probe()
488 		if (fg_pdata->warn_soc_lvl > 100)  in da9150_fg_probe()
489 			dev_warn(dev, "Invalid SOC warning level provided, Ignoring");  in da9150_fg_probe()
491 			fg->warn_soc = fg_pdata->warn_soc_lvl;  in da9150_fg_probe()
493 		if ((fg_pdata->crit_soc_lvl > 100) ||  in da9150_fg_probe()
494 		    (fg_pdata->crit_soc_lvl >= fg_pdata->warn_soc_lvl))  in da9150_fg_probe()
495 			dev_warn(dev, "Invalid SOC critical level provided, Ignoring");  in da9150_fg_probe()
497 			fg->crit_soc = fg_pdata->crit_soc_lvl;  in da9150_fg_probe()
502 	/* Configure initial SOC level events */  in da9150_fg_probe()
509 	if (fg->interval) {  in da9150_fg_probe()
510 		ret = devm_delayed_work_autocancel(dev, &fg->work,  in da9150_fg_probe()
517 		schedule_delayed_work(&fg->work,  in da9150_fg_probe()
518 				      msecs_to_jiffies(fg->interval));  in da9150_fg_probe()
541 	 * Trigger SOC check to happen now so as to indicate any value change  in da9150_fg_resume()
544 	if (fg->interval)  in da9150_fg_resume()
545 		flush_delayed_work(&fg->work);  in da9150_fg_resume()
552 		.name = "da9150-fuel-gauge",
560 MODULE_DESCRIPTION("Fuel-Gauge Driver for DA9150");