1 // SPDX-License-Identifier: GPL-2.0-or-later
5  * Copyright (C) 2000       Chen-Yuan Wu <gwu@esoft.com>
6  * Copyright (C) 2003-2009  Jean Delvare <jdelvare@suse.de>
19  * only in that it has "open-drain VID inputs while the ADM1025 has
20  * on-chip 100k pull-ups on the VID inputs". It doesn't make any
41 #include <linux/hwmon-sysfs.h>
42 #include <linux/hwmon-vid.h>
76  * The ADM1025 uses signed 8-bit values for temperatures.
87 #define TEMP_TO_REG(val)	((val) <= -127500 ? -128 : \
89 				 (((val) < 0 ? (val) - 500 : \
117 	struct i2c_client *client = data->client;  in adm1025_update_device()
119 	mutex_lock(&data->update_lock);  in adm1025_update_device()
121 	if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {  in adm1025_update_device()
124 		dev_dbg(&client->dev, "Updating data.\n");  in adm1025_update_device()
126 			data->in[i] = i2c_smbus_read_byte_data(client,  in adm1025_update_device()
128 			data->in_min[i] = i2c_smbus_read_byte_data(client,  in adm1025_update_device()
130 			data->in_max[i] = i2c_smbus_read_byte_data(client,  in adm1025_update_device()
134 			data->temp[i] = i2c_smbus_read_byte_data(client,  in adm1025_update_device()
136 			data->temp_min[i] = i2c_smbus_read_byte_data(client,  in adm1025_update_device()
138 			data->temp_max[i] = i2c_smbus_read_byte_data(client,  in adm1025_update_device()
141 		data->alarms = i2c_smbus_read_byte_data(client,  in adm1025_update_device()
145 		data->vid = (i2c_smbus_read_byte_data(client,  in adm1025_update_device()
150 		data->last_updated = jiffies;  in adm1025_update_device()
151 		data->valid = true;  in adm1025_update_device()
154 	mutex_unlock(&data->update_lock);  in adm1025_update_device()
166 	int index = to_sensor_dev_attr(attr)->index;  in in_show()
168 	return sprintf(buf, "%u\n", IN_FROM_REG(data->in[index],  in in_show()
175 	int index = to_sensor_dev_attr(attr)->index;  in in_min_show()
177 	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[index],  in in_min_show()
184 	int index = to_sensor_dev_attr(attr)->index;  in in_max_show()
186 	return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[index],  in in_max_show()
193 	int index = to_sensor_dev_attr(attr)->index;  in temp_show()
195 	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[index]));  in temp_show()
201 	int index = to_sensor_dev_attr(attr)->index;  in temp_min_show()
203 	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[index]));  in temp_min_show()
209 	int index = to_sensor_dev_attr(attr)->index;  in temp_max_show()
211 	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[index]));  in temp_max_show()
217 	int index = to_sensor_dev_attr(attr)->index;  in in_min_store()
219 	struct i2c_client *client = data->client;  in in_min_store()
227 	mutex_lock(&data->update_lock);  in in_min_store()
228 	data->in_min[index] = IN_TO_REG(val, in_scale[index]);  in in_min_store()
230 				  data->in_min[index]);  in in_min_store()
231 	mutex_unlock(&data->update_lock);  in in_min_store()
238 	int index = to_sensor_dev_attr(attr)->index;  in in_max_store()
240 	struct i2c_client *client = data->client;  in in_max_store()
248 	mutex_lock(&data->update_lock);  in in_max_store()
249 	data->in_max[index] = IN_TO_REG(val, in_scale[index]);  in in_max_store()
251 				  data->in_max[index]);  in in_max_store()
252 	mutex_unlock(&data->update_lock);  in in_max_store()
279 	int index = to_sensor_dev_attr(attr)->index;  in temp_min_store()
281 	struct i2c_client *client = data->client;  in temp_min_store()
289 	mutex_lock(&data->update_lock);  in temp_min_store()
290 	data->temp_min[index] = TEMP_TO_REG(val);  in temp_min_store()
292 				  data->temp_min[index]);  in temp_min_store()
293 	mutex_unlock(&data->update_lock);  in temp_min_store()
301 	int index = to_sensor_dev_attr(attr)->index;  in temp_max_store()
303 	struct i2c_client *client = data->client;  in temp_max_store()
311 	mutex_lock(&data->update_lock);  in temp_max_store()
312 	data->temp_max[index] = TEMP_TO_REG(val);  in temp_max_store()
314 				  data->temp_max[index]);  in temp_max_store()
315 	mutex_unlock(&data->update_lock);  in temp_max_store()
330 	return sprintf(buf, "%u\n", data->alarms);  in alarms_show()
337 	int bitnr = to_sensor_dev_attr(attr)->index;  in alarm_show()
339 	return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);  in alarm_show()
355 	return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));  in cpu0_vid_show()
363 	return sprintf(buf, "%u\n", data->vrm);  in vrm_show()
377 		return -EINVAL;  in vrm_store()
379 	data->vrm = val;  in vrm_store()
440 /* Return 0 if detection is successful, -ENODEV otherwise */
444 	struct i2c_adapter *adapter = client->adapter;  in adm1025_detect()
449 		return -ENODEV;  in adm1025_detect()
455 		dev_dbg(&adapter->dev, "ADM1025 detection failed at 0x%02x\n",  in adm1025_detect()
456 			client->addr);  in adm1025_detect()
457 		return -ENODEV;  in adm1025_detect()
463 		return -ENODEV;  in adm1025_detect()
468 	else if (man_id == 0xA1 && client->addr != 0x2E)  in adm1025_detect()
471 		return -ENODEV;  in adm1025_detect()
473 	strscpy(info->type, name, I2C_NAME_SIZE);  in adm1025_detect()
484 	data->vrm = vid_which_vrm();  in adm1025_init_client()
522 	struct device *dev = &client->dev;  in adm1025_probe()
529 		return -ENOMEM;  in adm1025_probe()
532 	data->client = client;  in adm1025_probe()
533 	mutex_init(&data->update_lock);  in adm1025_probe()
539 	data->groups[0] = &adm1025_group;  in adm1025_probe()
543 		data->groups[1] = &adm1025_group_in4;  in adm1025_probe()
545 	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,  in adm1025_probe()
546 							   data, data->groups);  in adm1025_probe()