#include <linux/err.h>
#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/module.h>
return reg & 0x0007;
}
-enum temp_index {
- t_input,
- t_crit,
- t_min,
- t_max,
- t_num_regs
-};
-
-static const u8 lm92_regs[t_num_regs] = {
- [t_input] = LM92_REG_TEMP,
- [t_crit] = LM92_REG_TEMP_CRIT,
- [t_min] = LM92_REG_TEMP_LOW,
- [t_max] = LM92_REG_TEMP_HIGH,
-};
-
/* Client data (each client gets its own) */
struct lm92_data {
struct regmap *regmap;
int resolution;
};
-/*
- * Sysfs attributes and callback functions
- */
-
-static ssize_t temp_show(struct device *dev, struct device_attribute *devattr,
- char *buf)
+static int lm92_temp_read(struct lm92_data *data, u32 attr, int channel, long *val)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct lm92_data *data = dev_get_drvdata(dev);
- u32 temp;
- int err;
-
- err = regmap_read(data->regmap, lm92_regs[attr->index], &temp);
- if (err)
- return err;
-
- return sprintf(buf, "%d\n", TEMP_FROM_REG(temp));
-}
-
-static ssize_t temp_store(struct device *dev,
- struct device_attribute *devattr, const char *buf,
- size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct lm92_data *data = dev_get_drvdata(dev);
+ int reg = -1, hyst_reg = -1, alarm_bit = 0;
struct regmap *regmap = data->regmap;
- int nr = attr->index;
- long val;
- int err;
-
- err = kstrtol(buf, 10, &val);
- if (err)
- return err;
+ u32 temp;
+ int ret;
- err = regmap_write(regmap, lm92_regs[nr], TEMP_TO_REG(val, data->resolution));
- if (err)
- return err;
- return count;
+ switch (attr) {
+ case hwmon_temp_input:
+ reg = LM92_REG_TEMP;
+ break;
+ case hwmon_temp_min:
+ reg = LM92_REG_TEMP_LOW;
+ break;
+ case hwmon_temp_max:
+ reg = LM92_REG_TEMP_HIGH;
+ break;
+ case hwmon_temp_crit:
+ reg = LM92_REG_TEMP_CRIT;
+ break;
+ case hwmon_temp_min_hyst:
+ hyst_reg = LM92_REG_TEMP_LOW;
+ break;
+ case hwmon_temp_max_hyst:
+ hyst_reg = LM92_REG_TEMP_HIGH;
+ break;
+ case hwmon_temp_crit_hyst:
+ hyst_reg = LM92_REG_TEMP_CRIT;
+ break;
+ case hwmon_temp_min_alarm:
+ alarm_bit = 0;
+ break;
+ case hwmon_temp_max_alarm:
+ alarm_bit = 1;
+ break;
+ case hwmon_temp_crit_alarm:
+ alarm_bit = 2;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+ if (reg >= 0) {
+ ret = regmap_read(regmap, reg, &temp);
+ if (ret < 0)
+ return ret;
+ *val = TEMP_FROM_REG(temp);
+ } else if (hyst_reg >= 0) {
+ u32 regs[2] = { hyst_reg, LM92_REG_TEMP_HYST };
+ u16 regvals[2];
+
+ ret = regmap_multi_reg_read(regmap, regs, regvals, 2);
+ if (ret)
+ return ret;
+ if (attr == hwmon_temp_min_hyst)
+ *val = TEMP_FROM_REG(regvals[0]) + TEMP_FROM_REG(regvals[1]);
+ else
+ *val = TEMP_FROM_REG(regvals[0]) - TEMP_FROM_REG(regvals[1]);
+ } else {
+ ret = regmap_read(regmap, LM92_REG_TEMP, &temp);
+ if (ret)
+ return ret;
+ *val = !!(temp & BIT(alarm_bit));
+ }
+ return 0;
}
-static ssize_t temp_hyst_show(struct device *dev,
- struct device_attribute *devattr, char *buf)
+static int lm92_chip_read(struct lm92_data *data, u32 attr, long *val)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- u32 regs[2] = { lm92_regs[attr->index], LM92_REG_TEMP_HYST };
- struct lm92_data *data = dev_get_drvdata(dev);
- u16 regvals[2];
- int err;
-
- err = regmap_multi_reg_read(data->regmap, regs, regvals, 2);
- if (err)
- return err;
+ u32 temp;
+ int ret;
- return sprintf(buf, "%d\n",
- TEMP_FROM_REG(regvals[0]) - TEMP_FROM_REG(regvals[1]));
+ switch (attr) {
+ case hwmon_chip_alarms:
+ ret = regmap_read(data->regmap, LM92_REG_TEMP, &temp);
+ if (ret)
+ return ret;
+ *val = ALARMS_FROM_REG(temp);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+ return 0;
}
-static ssize_t temp1_min_hyst_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+static int lm92_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
+ int channel, long *val)
{
- static u32 regs[2] = { LM92_REG_TEMP_LOW, LM92_REG_TEMP_HYST };
struct lm92_data *data = dev_get_drvdata(dev);
- u16 regvals[2];
- int err;
-
- err = regmap_multi_reg_read(data->regmap, regs, regvals, 2);
- if (err)
- return err;
- return sprintf(buf, "%d\n",
- TEMP_FROM_REG(regvals[0]) + TEMP_FROM_REG(regvals[1]));
+ switch (type) {
+ case hwmon_chip:
+ return lm92_chip_read(data, attr, val);
+ case hwmon_temp:
+ return lm92_temp_read(data, attr, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
}
-static ssize_t temp_hyst_store(struct device *dev,
- struct device_attribute *devattr,
- const char *buf, size_t count)
+static int lm92_temp_write(struct lm92_data *data, u32 attr, long val)
{
- struct lm92_data *data = dev_get_drvdata(dev);
struct regmap *regmap = data->regmap;
+ int reg, err;
u32 temp;
- long val;
- int err;
-
- err = kstrtol(buf, 10, &val);
- if (err)
- return err;
- val = clamp_val(val, -120000, 220000);
- mutex_lock(&data->update_lock);
- err = regmap_read(regmap, LM92_REG_TEMP_CRIT, &temp);
- if (err)
- goto unlock;
- val = TEMP_TO_REG(TEMP_FROM_REG(temp) - val, data->resolution);
- err = regmap_write(regmap, LM92_REG_TEMP_HYST, val);
+ switch (attr) {
+ case hwmon_temp_min:
+ reg = LM92_REG_TEMP_LOW;
+ break;
+ case hwmon_temp_max:
+ reg = LM92_REG_TEMP_HIGH;
+ break;
+ case hwmon_temp_crit:
+ reg = LM92_REG_TEMP_CRIT;
+ break;
+ case hwmon_temp_crit_hyst:
+ val = clamp_val(val, -120000, 220000);
+ mutex_lock(&data->update_lock);
+ err = regmap_read(regmap, LM92_REG_TEMP_CRIT, &temp);
+ if (err)
+ goto unlock;
+ val = TEMP_TO_REG(TEMP_FROM_REG(temp) - val, data->resolution);
+ err = regmap_write(regmap, LM92_REG_TEMP_HYST, val);
unlock:
- mutex_unlock(&data->update_lock);
- if (err)
+ mutex_unlock(&data->update_lock);
return err;
- return count;
+ default:
+ return -EOPNOTSUPP;
+ }
+ return regmap_write(regmap, reg, TEMP_TO_REG(val, data->resolution));
}
-static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
- char *buf)
+static int lm92_write(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long val)
{
struct lm92_data *data = dev_get_drvdata(dev);
- u32 temp;
- int err;
-
- err = regmap_read(data->regmap, LM92_REG_TEMP, &temp);
- if (err)
- return err;
- return sprintf(buf, "%d\n", ALARMS_FROM_REG(temp));
+ switch (type) {
+ case hwmon_temp:
+ return lm92_temp_write(data, attr, val);
+ default:
+ return -EOPNOTSUPP;
+ }
}
-static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
- char *buf)
+static umode_t lm92_is_visible(const void *_data, enum hwmon_sensor_types type,
+ u32 attr, int channel)
{
- struct lm92_data *data = dev_get_drvdata(dev);
- int bitnr = to_sensor_dev_attr(attr)->index;
- u32 temp;
- int err;
+ switch (type) {
+ case hwmon_chip:
+ switch (attr) {
+ case hwmon_chip_alarms:
+ return 0444;
+ default:
+ break;
+ }
+ break;
+ case hwmon_temp:
+ switch (attr) {
+ case hwmon_temp_min:
+ case hwmon_temp_max:
+ case hwmon_temp_crit:
+ case hwmon_temp_crit_hyst:
+ return 0644;
+ case hwmon_temp_input:
+ case hwmon_temp_min_hyst:
+ case hwmon_temp_max_hyst:
+ case hwmon_temp_min_alarm:
+ case hwmon_temp_max_alarm:
+ case hwmon_temp_crit_alarm:
+ return 0444;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
- err = regmap_read(data->regmap, LM92_REG_TEMP, &temp);
- if (err)
- return err;
+static const struct hwmon_channel_info * const lm92_info[] = {
+ HWMON_CHANNEL_INFO(chip, HWMON_C_ALARMS),
+ HWMON_CHANNEL_INFO(temp,
+ HWMON_T_INPUT |
+ HWMON_T_MIN | HWMON_T_MIN_HYST |
+ HWMON_T_MAX | HWMON_T_MAX_HYST |
+ HWMON_T_CRIT | HWMON_T_CRIT_HYST |
+ HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM |
+ HWMON_T_CRIT_ALARM),
+ NULL
+};
- return sprintf(buf, "%d\n", (temp >> bitnr) & 1);
-}
+static const struct hwmon_ops lm92_hwmon_ops = {
+ .is_visible = lm92_is_visible,
+ .read = lm92_read,
+ .write = lm92_write,
+};
-static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, t_input);
-static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp, t_crit);
-static SENSOR_DEVICE_ATTR_RW(temp1_crit_hyst, temp_hyst, t_crit);
-static SENSOR_DEVICE_ATTR_RW(temp1_min, temp, t_min);
-static DEVICE_ATTR_RO(temp1_min_hyst);
-static SENSOR_DEVICE_ATTR_RW(temp1_max, temp, t_max);
-static SENSOR_DEVICE_ATTR_RO(temp1_max_hyst, temp_hyst, t_max);
-static DEVICE_ATTR_RO(alarms);
-static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 2);
-static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, alarm, 0);
-static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 1);
+static const struct hwmon_chip_info lm92_chip_info = {
+ .ops = &lm92_hwmon_ops,
+ .info = lm92_info,
+};
/*
* Detection and registration
return regmap_clear_bits(regmap, LM92_REG_CONFIG, 0x01);
}
-static struct attribute *lm92_attrs[] = {
- &sensor_dev_attr_temp1_input.dev_attr.attr,
- &sensor_dev_attr_temp1_crit.dev_attr.attr,
- &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
- &sensor_dev_attr_temp1_min.dev_attr.attr,
- &dev_attr_temp1_min_hyst.attr,
- &sensor_dev_attr_temp1_max.dev_attr.attr,
- &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
- &dev_attr_alarms.attr,
- &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
- &sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
- &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
- NULL
-};
-ATTRIBUTE_GROUPS(lm92);
-
/* Return 0 if detection is successful, -ENODEV otherwise */
static int lm92_detect(struct i2c_client *new_client,
struct i2c_board_info *info)
if (err)
return err;
- hwmon_dev = devm_hwmon_device_register_with_groups(dev,
- client->name,
- data, lm92_groups);
+ hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data,
+ &lm92_chip_info, NULL);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
projects / users / jedix / linux-maple.git / commitdiff