Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * System Control and Management Interface(SCMI) based hwmon sensor driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2018-2020 ARM Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Sudeep Holla <sudeep.holla@arm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/hwmon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/scmi_protocol.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/thermal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) static const struct scmi_sensor_proto_ops *sensor_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) struct scmi_sensors {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	const struct scmi_protocol_handle *ph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	const struct scmi_sensor_info **info[hwmon_max];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) static inline u64 __pow10(u8 x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	u64 r = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	while (x--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 		r *= 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) static int scmi_hwmon_scale(const struct scmi_sensor_info *sensor, u64 *value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	int scale = sensor->scale;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	u64 f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	switch (sensor->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	case TEMPERATURE_C:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	case VOLTAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	case CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		scale += 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	case POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	case ENERGY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 		scale += 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	if (scale == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	if (abs(scale) > 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		return -E2BIG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	f = __pow10(abs(scale));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	if (scale > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		*value *= f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		*value = div64_u64(*value, f);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static int scmi_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 			   u32 attr, int channel, long *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	u64 value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	const struct scmi_sensor_info *sensor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	struct scmi_sensors *scmi_sensors = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	sensor = *(scmi_sensors->info[type] + channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	ret = sensor_ops->reading_get(scmi_sensors->ph, sensor->id, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	ret = scmi_hwmon_scale(sensor, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		*val = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) scmi_hwmon_read_string(struct device *dev, enum hwmon_sensor_types type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		       u32 attr, int channel, const char **str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	const struct scmi_sensor_info *sensor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	struct scmi_sensors *scmi_sensors = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	sensor = *(scmi_sensors->info[type] + channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	*str = sensor->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static umode_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) scmi_hwmon_is_visible(const void *drvdata, enum hwmon_sensor_types type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		      u32 attr, int channel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	const struct scmi_sensor_info *sensor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	const struct scmi_sensors *scmi_sensors = drvdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	sensor = *(scmi_sensors->info[type] + channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	if (sensor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		return 0444;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static const struct hwmon_ops scmi_hwmon_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	.is_visible = scmi_hwmon_is_visible,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	.read = scmi_hwmon_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	.read_string = scmi_hwmon_read_string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static struct hwmon_chip_info scmi_chip_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	.ops = &scmi_hwmon_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	.info = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static int scmi_hwmon_add_chan_info(struct hwmon_channel_info *scmi_hwmon_chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 				    struct device *dev, int num,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 				    enum hwmon_sensor_types type, u32 config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	u32 *cfg = devm_kcalloc(dev, num + 1, sizeof(*cfg), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	if (!cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	scmi_hwmon_chan->type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	scmi_hwmon_chan->config = cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	for (i = 0; i < num; i++, cfg++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		*cfg = config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static enum hwmon_sensor_types scmi_types[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	[TEMPERATURE_C] = hwmon_temp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	[VOLTAGE] = hwmon_in,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	[CURRENT] = hwmon_curr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	[POWER] = hwmon_power,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	[ENERGY] = hwmon_energy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static u32 hwmon_attributes[hwmon_max] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	[hwmon_chip] = HWMON_C_REGISTER_TZ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	[hwmon_temp] = HWMON_T_INPUT | HWMON_T_LABEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	[hwmon_in] = HWMON_I_INPUT | HWMON_I_LABEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	[hwmon_curr] = HWMON_C_INPUT | HWMON_C_LABEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	[hwmon_power] = HWMON_P_INPUT | HWMON_P_LABEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	[hwmon_energy] = HWMON_E_INPUT | HWMON_E_LABEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static int scmi_hwmon_probe(struct scmi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	int i, idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	u16 nr_sensors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	enum hwmon_sensor_types type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	struct scmi_sensors *scmi_sensors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	const struct scmi_sensor_info *sensor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	int nr_count[hwmon_max] = {0}, nr_types = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	const struct hwmon_chip_info *chip_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	struct device *hwdev, *dev = &sdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	struct hwmon_channel_info *scmi_hwmon_chan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	const struct hwmon_channel_info **ptr_scmi_ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	const struct scmi_handle *handle = sdev->handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	struct scmi_protocol_handle *ph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	if (!handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	sensor_ops = handle->devm_get_protocol(sdev, SCMI_PROTOCOL_SENSOR, &ph);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	if (IS_ERR(sensor_ops))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		return PTR_ERR(sensor_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	nr_sensors = sensor_ops->count_get(ph);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	if (!nr_sensors)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	scmi_sensors = devm_kzalloc(dev, sizeof(*scmi_sensors), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	if (!scmi_sensors)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	scmi_sensors->ph = ph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	for (i = 0; i < nr_sensors; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		sensor = sensor_ops->info_get(ph, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		if (!sensor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		switch (sensor->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		case TEMPERATURE_C:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		case VOLTAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		case CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		case POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		case ENERGY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 			type = scmi_types[sensor->type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 			if (!nr_count[type])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 				nr_types++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			nr_count[type]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	if (nr_count[hwmon_temp]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		nr_count[hwmon_chip]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		nr_types++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	scmi_hwmon_chan = devm_kcalloc(dev, nr_types, sizeof(*scmi_hwmon_chan),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 				       GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (!scmi_hwmon_chan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	ptr_scmi_ci = devm_kcalloc(dev, nr_types + 1, sizeof(*ptr_scmi_ci),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 				   GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	if (!ptr_scmi_ci)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	scmi_chip_info.info = ptr_scmi_ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	chip_info = &scmi_chip_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	for (type = 0; type < hwmon_max; type++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		if (!nr_count[type])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		scmi_hwmon_add_chan_info(scmi_hwmon_chan, dev, nr_count[type],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 					 type, hwmon_attributes[type]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		*ptr_scmi_ci++ = scmi_hwmon_chan++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		scmi_sensors->info[type] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 			devm_kcalloc(dev, nr_count[type],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 				     sizeof(*scmi_sensors->info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		if (!scmi_sensors->info[type])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 			return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	for (i = nr_sensors - 1; i >= 0 ; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		sensor = sensor_ops->info_get(ph, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		if (!sensor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		switch (sensor->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		case TEMPERATURE_C:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		case VOLTAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		case CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		case POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		case ENERGY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 			type = scmi_types[sensor->type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 			idx = --nr_count[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 			*(scmi_sensors->info[type] + idx) = sensor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	hwdev = devm_hwmon_device_register_with_info(dev, "scmi_sensors",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 						     scmi_sensors, chip_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 						     NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	return PTR_ERR_OR_ZERO(hwdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) static const struct scmi_device_id scmi_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	{ SCMI_PROTOCOL_SENSOR, "hwmon" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) MODULE_DEVICE_TABLE(scmi, scmi_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static struct scmi_driver scmi_hwmon_drv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	.name		= "scmi-hwmon",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	.probe		= scmi_hwmon_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	.id_table	= scmi_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) module_scmi_driver(scmi_hwmon_drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) MODULE_AUTHOR("Sudeep Holla <sudeep.holla@arm.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) MODULE_DESCRIPTION("ARM SCMI HWMON interface driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) MODULE_LICENSE("GPL v2");