1 // SPDX-License-Identifier: GPL-2.0-only
3  * emc1403.c - SMSC Thermal Driver
17 #include <linux/hwmon-sysfs.h>
43 	retval = regmap_read(data->regmap, sda->index, &val);  in temp_show()
57 	retval = regmap_read(data->regmap, sda->nr, &val);  in bit_show()
60 	return sprintf(buf, "%d\n", !!(val & sda->index));  in bit_show()
72 		return -EINVAL;  in temp_store()
73 	retval = regmap_write(data->regmap, sda->index,  in temp_store()
89 		return -EINVAL;  in bit_store()
91 	retval = regmap_update_bits(data->regmap, sda->nr, sda->index,  in bit_store()
92 				    val ? sda->index : 0);  in bit_store()
104 	struct regmap *regmap = data->regmap;  in show_hyst_common()
109 	retval = regmap_read(regmap, sda->index, &limit);  in show_hyst_common()
117 	return sprintf(buf, "%d000\n", is_min ? limit + hyst : limit - hyst);  in show_hyst_common()
137 	struct regmap *regmap = data->regmap;  in hyst_store()
144 		return -EINVAL;  in hyst_store()
146 	mutex_lock(&data->mutex);  in hyst_store()
147 	retval = regmap_read(regmap, sda->index, &limit);  in hyst_store()
151 	hyst = limit * 1000 - val;  in hyst_store()
157 	mutex_unlock(&data->mutex);  in hyst_store()
290  * Since we can not re-use the same attribute names, create a separate attribute
323 	/* Check if thermal chip is SMSC and EMC1403 or EMC1423 */  in emc1403_detect()
327 		return -ENODEV;  in emc1403_detect()
332 		strlcpy(info->type, "emc1402", I2C_NAME_SIZE);  in emc1403_detect()
335 		strlcpy(info->type, "emc1403", I2C_NAME_SIZE);  in emc1403_detect()
338 		strlcpy(info->type, "emc1422", I2C_NAME_SIZE);  in emc1403_detect()
341 		strlcpy(info->type, "emc1423", I2C_NAME_SIZE);  in emc1403_detect()
344 		strlcpy(info->type, "emc1404", I2C_NAME_SIZE);  in emc1403_detect()
347 		strlcpy(info->type, "emc1424", I2C_NAME_SIZE);  in emc1403_detect()
350 		return -ENODEV;  in emc1403_detect()
355 		return -ENODEV;  in emc1403_detect()
363 	case 0x00:	/* internal diode high byte */  in emc1403_regmap_is_volatile()
364 	case 0x01:	/* external diode 1 high byte */  in emc1403_regmap_is_volatile()
366 	case 0x10:	/* external diode 1 low byte */  in emc1403_regmap_is_volatile()
367 	case 0x1b:	/* external diode fault */  in emc1403_regmap_is_volatile()
368 	case 0x23:	/* external diode 2 high byte */  in emc1403_regmap_is_volatile()
369 	case 0x24:	/* external diode 2 low byte */  in emc1403_regmap_is_volatile()
370 	case 0x29:	/* internal diode low byte */  in emc1403_regmap_is_volatile()
371 	case 0x2a:	/* externl diode 3 high byte */  in emc1403_regmap_is_volatile()
372 	case 0x2b:	/* external diode 3 low byte */  in emc1403_regmap_is_volatile()
397 	data = devm_kzalloc(&client->dev, sizeof(struct thermal_data),  in emc1403_probe()
400 		return -ENOMEM;  in emc1403_probe()
402 	data->regmap = devm_regmap_init_i2c(client, &emc1403_regmap_config);  in emc1403_probe()
403 	if (IS_ERR(data->regmap))  in emc1403_probe()
404 		return PTR_ERR(data->regmap);  in emc1403_probe()
406 	mutex_init(&data->mutex);  in emc1403_probe()
408 	switch (id->driver_data) {  in emc1403_probe()
410 		data->groups[2] = &emc1404_group;  in emc1403_probe()
413 		data->groups[1] = &emc1403_group;  in emc1403_probe()
416 		data->groups[0] = &emc1402_group;  in emc1403_probe()
419 	if (id->driver_data == emc1402)  in emc1403_probe()
420 		data->groups[1] = &emc1402_alarm_group;  in emc1403_probe()
422 	hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,  in emc1403_probe()
423 							   client->name, data,  in emc1403_probe()
424 							   data->groups);  in emc1403_probe()
428 	dev_info(&client->dev, "%s Thermal chip found\n", id->name);  in emc1403_probe()
465 MODULE_DESCRIPTION("emc1403 Thermal Driver");