1 // SPDX-License-Identifier: GPL-2.0
3  * System Control and Management Interface(SCMI) based hwmon sensor driver
25 	while (x--)  in __pow10()
31 static int scmi_hwmon_scale(const struct scmi_sensor_info *sensor, u64 *value)  in scmi_hwmon_scale()  argument
33 	s8 scale = sensor->scale;  in scmi_hwmon_scale()
36 	switch (sensor->type) {  in scmi_hwmon_scale()
54 		return -E2BIG;  in scmi_hwmon_scale()
66 			   u32 attr, int channel, long *val)  in scmi_hwmon_read()  argument
70 	const struct scmi_sensor_info *sensor;  in scmi_hwmon_read()  local
72 	const struct scmi_handle *h = scmi_sensors->handle;  in scmi_hwmon_read()
74 	sensor = *(scmi_sensors->info[type] + channel);  in scmi_hwmon_read()
75 	ret = h->sensor_ops->reading_get(h, sensor->id, &value);  in scmi_hwmon_read()
79 	ret = scmi_hwmon_scale(sensor, &value);  in scmi_hwmon_read()
88 		       u32 attr, int channel, const char **str)  in scmi_hwmon_read_string()  argument
90 	const struct scmi_sensor_info *sensor;  in scmi_hwmon_read_string()  local
93 	sensor = *(scmi_sensors->info[type] + channel);  in scmi_hwmon_read_string()
94 	*str = sensor->name;  in scmi_hwmon_read_string()
101 		      u32 attr, int channel)  in scmi_hwmon_is_visible()  argument
103 	const struct scmi_sensor_info *sensor;  in scmi_hwmon_is_visible()  local
106 	sensor = *(scmi_sensors->info[type] + channel);  in scmi_hwmon_is_visible()
107 	if (sensor)  in scmi_hwmon_is_visible()
132 		return -ENOMEM;  in scmi_hwmon_add_chan_info()
134 	scmi_hwmon_chan->type = type;  in scmi_hwmon_add_chan_info()
135 	scmi_hwmon_chan->config = cfg;  in scmi_hwmon_add_chan_info()
165 	const struct scmi_sensor_info *sensor;  in scmi_hwmon_probe()  local
168 	struct device *hwdev, *dev = &sdev->dev;  in scmi_hwmon_probe()
171 	const struct scmi_handle *handle = sdev->handle;  in scmi_hwmon_probe()
173 	if (!handle || !handle->sensor_ops)  in scmi_hwmon_probe()
174 		return -ENODEV;  in scmi_hwmon_probe()
176 	nr_sensors = handle->sensor_ops->count_get(handle);  in scmi_hwmon_probe()
178 		return -EIO;  in scmi_hwmon_probe()
182 		return -ENOMEM;  in scmi_hwmon_probe()
184 	scmi_sensors->handle = handle;  in scmi_hwmon_probe()
187 		sensor = handle->sensor_ops->info_get(handle, i);  in scmi_hwmon_probe()
188 		if (!sensor)  in scmi_hwmon_probe()
189 			return -EINVAL;  in scmi_hwmon_probe()
191 		switch (sensor->type) {  in scmi_hwmon_probe()
197 			type = scmi_types[sensor->type];  in scmi_hwmon_probe()
213 		return -ENOMEM;  in scmi_hwmon_probe()
218 		return -ENOMEM;  in scmi_hwmon_probe()
231 		scmi_sensors->info[type] =  in scmi_hwmon_probe()
233 				     sizeof(*scmi_sensors->info), GFP_KERNEL);  in scmi_hwmon_probe()
234 		if (!scmi_sensors->info[type])  in scmi_hwmon_probe()
235 			return -ENOMEM;  in scmi_hwmon_probe()
238 	for (i = nr_sensors - 1; i >= 0 ; i--) {  in scmi_hwmon_probe()
239 		sensor = handle->sensor_ops->info_get(handle, i);  in scmi_hwmon_probe()
240 		if (!sensor)  in scmi_hwmon_probe()
243 		switch (sensor->type) {  in scmi_hwmon_probe()
249 			type = scmi_types[sensor->type];  in scmi_hwmon_probe()
250 			idx = --nr_count[type];  in scmi_hwmon_probe()
251 			*(scmi_sensors->info[type] + idx) = sensor;  in scmi_hwmon_probe()
270 	.name		= "scmi-hwmon",