1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) ST-Ericsson 2010 - 2013
19 #include <linux/hwmon-sysfs.h>
37 	data->work_active = true;  in schedule_monitor()
38 	schedule_delayed_work(&data->work, DEFAULT_MONITOR_DELAY);  in schedule_monitor()
44 	for (i = 0; i < data->monitored_sensors; i++)  in threshold_updated()
45 		if (data->max[i] != 0 || data->min[i] != 0) {  in threshold_updated()
50 	dev_dbg(&data->pdev->dev, "No active thresholds.\n");  in threshold_updated()
51 	cancel_delayed_work_sync(&data->work);  in threshold_updated()
52 	data->work_active = false;  in threshold_updated()
63 	mutex_lock(&data->lock);  in gpadc_monitor()
65 	for (i = 0; i < data->monitored_sensors; i++) {  in gpadc_monitor()
67 		if (data->max[i] == 0 && data->min[i] == 0)  in gpadc_monitor()
70 		if (data->max[i] < data->min[i])  in gpadc_monitor()
73 		ret = data->ops.read_sensor(data, data->gpadc_addr[i], &temp);  in gpadc_monitor()
75 			dev_err(&data->pdev->dev, "GPADC read failed\n");  in gpadc_monitor()
82 		if (data->min[i] != 0) {  in gpadc_monitor()
83 			if (temp < data->min[i]) {  in gpadc_monitor()
84 				if (data->min_alarm[i] == false) {  in gpadc_monitor()
85 					data->min_alarm[i] = true;  in gpadc_monitor()
89 				if (data->min_alarm[i] == true) {  in gpadc_monitor()
90 					data->min_alarm[i] = false;  in gpadc_monitor()
95 		if (data->max[i] != 0) {  in gpadc_monitor()
96 			if (temp > data->max[i]) {  in gpadc_monitor()
97 				if (data->max_alarm[i] == false) {  in gpadc_monitor()
98 					data->max_alarm[i] = true;  in gpadc_monitor()
101 			} else if (temp < data->max[i] - data->max_hyst[i]) {  in gpadc_monitor()
102 				if (data->max_alarm[i] == true) {  in gpadc_monitor()
103 					data->max_alarm[i] = false;  in gpadc_monitor()
111 			sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node);  in gpadc_monitor()
115 			sysfs_notify(&data->pdev->dev.kobj, NULL, alarm_node);  in gpadc_monitor()
120 	mutex_unlock(&data->lock);  in gpadc_monitor()
128 	/* Show chip name */  in name_show()
129 	return data->ops.show_name(dev, devattr, buf);  in name_show()
137 	return data->ops.show_label(dev, devattr, buf);  in label_show()
145 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);  in input_show()  local
146 	u8 gpadc_addr = data->gpadc_addr[attr->index];  in input_show()
148 	ret = data->ops.read_sensor(data, gpadc_addr, &temp);  in input_show()
161 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);  in min_store()  local
168 	mutex_lock(&data->lock);  in min_store()
169 	data->min[attr->index] = val;  in min_store()
171 	mutex_unlock(&data->lock);  in min_store()
181 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);  in max_store()  local
188 	mutex_lock(&data->lock);  in max_store()
189 	data->max[attr->index] = val;  in max_store()
191 	mutex_unlock(&data->lock);  in max_store()
202 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);  in max_hyst_store()  local
209 	mutex_lock(&data->lock);  in max_hyst_store()
210 	data->max_hyst[attr->index] = val;  in max_hyst_store()
212 	mutex_unlock(&data->lock);  in max_hyst_store()
222 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);  in min_show()  local
224 	return sprintf(buf, "%lu\n", data->min[attr->index]);  in min_show()
231 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);  in max_show()  local
233 	return sprintf(buf, "%lu\n", data->max[attr->index]);  in max_show()
240 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);  in max_hyst_show()  local
242 	return sprintf(buf, "%lu\n", data->max_hyst[attr->index]);  in max_hyst_show()
249 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);  in min_alarm_show()  local
251 	return sprintf(buf, "%d\n", data->min_alarm[attr->index]);  in min_alarm_show()
258 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);  in max_alarm_show()  local
260 	return sprintf(buf, "%d\n", data->max_alarm[attr->index]);  in max_alarm_show()
264 				   struct attribute *attr, int n)  in abx500_attrs_visible()  argument
269 	if (data->ops.is_visible)  in abx500_attrs_visible()
270 		return data->ops.is_visible(attr, n);  in abx500_attrs_visible()
272 	return attr->mode;  in abx500_attrs_visible()
275 /* Chip name, required by hwmon */
276 static SENSOR_DEVICE_ATTR_RO(name, name, 0);
278 /* GPADC - SENSOR1 */
282 static SENSOR_DEVICE_ATTR_RW(temp1_max, max, 0);
287 /* GPADC - SENSOR2 */
291 static SENSOR_DEVICE_ATTR_RW(temp2_max, max, 1);
296 /* GPADC - SENSOR3 */
300 static SENSOR_DEVICE_ATTR_RW(temp3_max, max, 2);
305 /* GPADC - SENSOR4 */
309 static SENSOR_DEVICE_ATTR_RW(temp4_max, max, 3);
315 	&sensor_dev_attr_name.dev_attr.attr,
317 	&sensor_dev_attr_temp1_label.dev_attr.attr,
318 	&sensor_dev_attr_temp1_input.dev_attr.attr,
319 	&sensor_dev_attr_temp1_min.dev_attr.attr,
320 	&sensor_dev_attr_temp1_max.dev_attr.attr,
321 	&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
322 	&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
323 	&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
325 	&sensor_dev_attr_temp2_label.dev_attr.attr,
326 	&sensor_dev_attr_temp2_input.dev_attr.attr,
327 	&sensor_dev_attr_temp2_min.dev_attr.attr,
328 	&sensor_dev_attr_temp2_max.dev_attr.attr,
329 	&sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
330 	&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
331 	&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
333 	&sensor_dev_attr_temp3_label.dev_attr.attr,
334 	&sensor_dev_attr_temp3_input.dev_attr.attr,
335 	&sensor_dev_attr_temp3_min.dev_attr.attr,
336 	&sensor_dev_attr_temp3_max.dev_attr.attr,
337 	&sensor_dev_attr_temp3_max_hyst.dev_attr.attr,
338 	&sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
339 	&sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
341 	&sensor_dev_attr_temp4_label.dev_attr.attr,
342 	&sensor_dev_attr_temp4_input.dev_attr.attr,
343 	&sensor_dev_attr_temp4_min.dev_attr.attr,
344 	&sensor_dev_attr_temp4_max.dev_attr.attr,
345 	&sensor_dev_attr_temp4_max_hyst.dev_attr.attr,
346 	&sensor_dev_attr_temp4_min_alarm.dev_attr.attr,
347 	&sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
361 	data->ops.irq_handler(irq, data);  in abx500_temp_irq_handler()
371 		dev_err(&pdev->dev, "Get irq by name failed\n");  in setup_irqs()
375 	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,  in setup_irqs()
376 		abx500_temp_irq_handler, 0, "abx500-temp", pdev);  in setup_irqs()
378 		dev_err(&pdev->dev, "Request threaded irq failed (%d)\n", ret);  in setup_irqs()
388 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);  in abx500_temp_probe()
390 		return -ENOMEM;  in abx500_temp_probe()
392 	data->pdev = pdev;  in abx500_temp_probe()
393 	mutex_init(&data->lock);  in abx500_temp_probe()
397 	if (err	< 0 || !data->ops.read_sensor || !data->ops.show_name ||  in abx500_temp_probe()
398 			!data->ops.show_label)  in abx500_temp_probe()
401 	INIT_DEFERRABLE_WORK(&data->work, gpadc_monitor);  in abx500_temp_probe()
405 	err = sysfs_create_group(&pdev->dev.kobj, &abx500_temp_group);  in abx500_temp_probe()
407 		dev_err(&pdev->dev, "Create sysfs group failed (%d)\n", err);  in abx500_temp_probe()
411 	data->hwmon_dev = hwmon_device_register(&pdev->dev);  in abx500_temp_probe()
412 	if (IS_ERR(data->hwmon_dev)) {  in abx500_temp_probe()
413 		err = PTR_ERR(data->hwmon_dev);  in abx500_temp_probe()
414 		dev_err(&pdev->dev, "Class registration failed (%d)\n", err);  in abx500_temp_probe()
418 	if (data->ops.irq_handler) {  in abx500_temp_probe()
426 	hwmon_device_unregister(data->hwmon_dev);  in abx500_temp_probe()
428 	sysfs_remove_group(&pdev->dev.kobj, &abx500_temp_group);  in abx500_temp_probe()
436 	cancel_delayed_work_sync(&data->work);  in abx500_temp_remove()
437 	hwmon_device_unregister(data->hwmon_dev);  in abx500_temp_remove()
438 	sysfs_remove_group(&pdev->dev.kobj, &abx500_temp_group);  in abx500_temp_remove()
448 	if (data->work_active)  in abx500_temp_suspend()
449 		cancel_delayed_work_sync(&data->work);  in abx500_temp_suspend()
458 	if (data->work_active)  in abx500_temp_resume()
466 	{ .compatible = "stericsson,abx500-temp" },
474 		.name = "abx500-temp",