1 // SPDX-License-Identifier: GPL-2.0-or-later
14 #include <linux/hwmon-sysfs.h>
46 #define INVALID_INDEX (-1U)
53 	"ibm,opal-sensor-cooling-fan",
54 	"ibm,opal-sensor-amb-temp",
55 	"ibm,opal-sensor-power-supply",
56 	"ibm,opal-sensor-power"
60 	const char *name; /* matches property 'sensor-type' */
105 	if (sdata->sgrp_data && !sdata->sgrp_data->enable)  in show_sensor()
106 		return -ENODATA;  in show_sensor()
108 	ret =  opal_get_sensor_data_u64(sdata->id, &x);  in show_sensor()
113 	/* Convert temperature to milli-degrees */  in show_sensor()
114 	if (sdata->type == TEMP)  in show_sensor()
116 	/* Convert power to micro-watts */  in show_sensor()
117 	else if (sdata->type == POWER_INPUT)  in show_sensor()
129 	return sprintf(buf, "%u\n", sdata->sgrp_data->enable);  in show_enable()
138 	struct sensor_group_data *sgrp_data = sdata->sgrp_data;  in store_enable()
146 	ret = mutex_lock_interruptible(&sgrp_data->mutex);  in store_enable()
150 	if (data != sgrp_data->enable) {  in store_enable()
151 		ret =  sensor_group_enable(sgrp_data->gid, data);  in store_enable()
153 			sgrp_data->enable = data;  in store_enable()
159 	mutex_unlock(&sgrp_data->mutex);  in store_enable()
169 	return sprintf(buf, "%s\n", sdata->label);  in show_label()
180 	return -ENOENT;  in get_logical_cpu()
189 	n = scnprintf(sdata->label, sizeof(sdata->label), "%s", label);  in make_sensor_label()
202 			n += scnprintf(sdata->label + n,  in make_sensor_label()
203 				      sizeof(sdata->label) - n, " %d",  in make_sensor_label()
206 			n += scnprintf(sdata->label + n,  in make_sensor_label()
207 				      sizeof(sdata->label) - n, " phy%d", id);  in make_sensor_label()
213 	if (!of_property_read_u32(np, "ibm,chip-id", &id))  in make_sensor_label()
214 		n += scnprintf(sdata->label + n, sizeof(sdata->label) - n,  in make_sensor_label()
227 		return -EINVAL;  in get_sensor_index_attr()
229 	dash_pos = strchr(hash_pos, '-');  in get_sensor_index_attr()
231 		return -EINVAL;  in get_sensor_index_attr()
233 	copy_len = dash_pos - hash_pos - 1;  in get_sensor_index_attr()
235 		return -EINVAL;  in get_sensor_index_attr()
269  * IBMPOWERNV device node appear like cooling-fan#2-data, amb-temp#1-thrs etc.
286 		return ERR_PTR(-ENOENT);  in parse_opal_node_name()
304 	if (!of_device_is_compatible(np, "ibm,opal-sensor"))  in get_sensor_type()
307 	if (of_property_read_string(np, "sensor-type", &str))  in get_sensor_type()
325 	if (sdata->opal_index != INVALID_INDEX) {  in get_sensor_hwmon_index()
327 			if (sdata_table[i].opal_index == sdata->opal_index &&  in get_sensor_hwmon_index()
328 			    sdata_table[i].type == sdata->type)  in get_sensor_hwmon_index()
331 	return ++sensor_groups[sdata->type].hwmon_index;  in get_sensor_hwmon_index()
342 	groups = of_find_compatible_node(NULL, NULL, "ibm,opal-sensor-group");  in init_sensor_group_data()
349 			pdata->nr_sensor_groups++;  in init_sensor_group_data()
352 	if (!pdata->nr_sensor_groups)  in init_sensor_group_data()
355 	sgrp_data = devm_kcalloc(&pdev->dev, pdata->nr_sensor_groups,  in init_sensor_group_data()
358 		ret = -ENOMEM;  in init_sensor_group_data()
369 		if (of_property_read_u32(sgrp, "sensor-group-id", &gid))  in init_sensor_group_data()
381 	pdata->sgrp_data = sgrp_data;  in init_sensor_group_data()
391 	struct sensor_group_data *sgrp_data = pdata->sgrp_data;  in get_sensor_group()
394 	groups = of_find_compatible_node(NULL, NULL, "ibm,opal-sensor-group");  in get_sensor_group()
408 		if (of_property_read_u32(sgrp, "sensor-group-id", &gid))  in get_sensor_group()
412 			if (it.phandle == node->phandle) {  in get_sensor_group()
420 		for (i = 0; i < pdata->nr_sensor_groups; i++)  in get_sensor_group()
435 	const struct attribute_group **pgroups = pdata->attr_groups;  in populate_attr_groups()
459 		if (of_property_present(np, "sensor-data-min"))  in populate_attr_groups()
461 		if (of_property_present(np, "sensor-data-max"))  in populate_attr_groups()
468 		sensor_groups[type].group.attrs = devm_kcalloc(&pdev->dev,  in populate_attr_groups()
473 			return -ENOMEM;  in populate_attr_groups()
476 		pdata->sensors_count += sensor_groups[type].attr_count;  in populate_attr_groups()
491 	snprintf(sdata->name, MAX_ATTR_LEN, "%s%d_%s",  in create_hwmon_attr()
492 		 sensor_groups[sdata->type].name, sdata->hwmon_index,  in create_hwmon_attr()
495 	sysfs_attr_init(&sdata->dev_attr.attr);  in create_hwmon_attr()
496 	sdata->dev_attr.attr.name = sdata->name;  in create_hwmon_attr()
497 	sdata->dev_attr.show = show;  in create_hwmon_attr()
499 		sdata->dev_attr.store = store;  in create_hwmon_attr()
500 		sdata->dev_attr.attr.mode = 0664;  in create_hwmon_attr()
502 		sdata->dev_attr.attr.mode = 0444;  in create_hwmon_attr()
517 	sdata->id = sid;  in populate_sensor()
518 	sdata->type = type;  in populate_sensor()
519 	sdata->opal_index = od;  in populate_sensor()
520 	sdata->hwmon_index = hd;  in populate_sensor()
522 	pgroup->attrs[sensor_groups[type].attr_count++] = &sdata->dev_attr.attr;  in populate_sensor()
523 	sdata->sgrp_data = sgrp_data;  in populate_sensor()
555 	const struct attribute_group **pgroups = pdata->attr_groups;  in create_device_attrs()
561 	sdata = devm_kcalloc(&pdev->dev,  in create_device_attrs()
562 			     pdata->sensors_count, sizeof(*sdata),  in create_device_attrs()
565 		return -ENOMEM;  in create_device_attrs()
581 		 * Newer device trees use a "sensor-data" property  in create_device_attrs()
584 		if (of_property_read_u32(np, "sensor-id", &sensor_id) &&  in create_device_attrs()
585 		    of_property_read_u32(np, "sensor-data", &sensor_id)) {  in create_device_attrs()
586 			dev_info(&pdev->dev,  in create_device_attrs()
587 				 "'sensor-id' missing in the node '%pOFn'\n",  in create_device_attrs()
601 		attr_name = parse_opal_node_name(np->name, type, &opal_index);  in create_device_attrs()
629 		if (!of_property_read_u32(np, "sensor-data-max", &sensor_id)) {  in create_device_attrs()
638 		if (!of_property_read_u32(np, "sensor-data-min", &sensor_id)) {  in create_device_attrs()
647 		if (sgrp_data && !sgrp_data->enable) {  in create_device_attrs()
648 			sgrp_data->enable = true;  in create_device_attrs()
651 					sgrp_data->gid, "enable", type,  in create_device_attrs()
668 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);  in ibmpowernv_probe()
670 		return -ENOMEM;  in ibmpowernv_probe()
673 	pdata->sensors_count = 0;  in ibmpowernv_probe()
674 	pdata->nr_sensor_groups = 0;  in ibmpowernv_probe()
685 	hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev, DRVNAME,  in ibmpowernv_probe()
687 							   pdata->attr_groups);  in ibmpowernv_probe()
694 		.name = "opal-sensor",
701 	{ .compatible	= "ibm,opal-sensor" },