[PATCH] I2C: lm83 uses new sysfs callbacks
I updated the lm83 hardware monitoring driver to take benefit of Yani Ioannou's new sysfs callback capabilities. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>hifive-unleashed-5.1
Jean Delvare
Greg Kroah-Hartman
parent
30d7394b1a
commit
1a86c05121
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@ -1,7 +1,7 @@
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/*
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* lm83.c - Part of lm_sensors, Linux kernel modules for hardware
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* monitoring
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* Copyright (C) 2003 Jean Delvare <khali@linux-fr.org>
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* Copyright (C) 2003-2005 Jean Delvare <khali@linux-fr.org>
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*
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* Heavily inspired from the lm78, lm75 and adm1021 drivers. The LM83 is
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* a sensor chip made by National Semiconductor. It reports up to four
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@ -33,6 +33,7 @@
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#include <linux/jiffies.h>
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#include <linux/i2c.h>
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#include <linux/i2c-sensor.h>
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#include <linux/i2c-sysfs.h>
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/*
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* Addresses to scan
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@ -93,21 +94,20 @@ static const u8 LM83_REG_R_TEMP[] = {
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LM83_REG_R_LOCAL_TEMP,
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LM83_REG_R_REMOTE1_TEMP,
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LM83_REG_R_REMOTE2_TEMP,
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LM83_REG_R_REMOTE3_TEMP
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};
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static const u8 LM83_REG_R_HIGH[] = {
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LM83_REG_R_REMOTE3_TEMP,
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LM83_REG_R_LOCAL_HIGH,
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LM83_REG_R_REMOTE1_HIGH,
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LM83_REG_R_REMOTE2_HIGH,
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LM83_REG_R_REMOTE3_HIGH
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LM83_REG_R_REMOTE3_HIGH,
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LM83_REG_R_TCRIT,
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};
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static const u8 LM83_REG_W_HIGH[] = {
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LM83_REG_W_LOCAL_HIGH,
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LM83_REG_W_REMOTE1_HIGH,
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LM83_REG_W_REMOTE2_HIGH,
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LM83_REG_W_REMOTE3_HIGH
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LM83_REG_W_REMOTE3_HIGH,
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LM83_REG_W_TCRIT,
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};
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/*
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@ -143,9 +143,9 @@ struct lm83_data {
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unsigned long last_updated; /* in jiffies */
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/* registers values */
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s8 temp_input[4];
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s8 temp_high[4];
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s8 temp_crit;
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s8 temp[9]; /* 0..3: input 1-4,
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4..7: high limit 1-4,
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8 : critical limit */
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u16 alarms; /* bitvector, combined */
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};
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@ -153,65 +153,55 @@ struct lm83_data {
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* Sysfs stuff
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*/
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#define show_temp(suffix, value) \
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static ssize_t show_temp_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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struct lm83_data *data = lm83_update_device(dev); \
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->value)); \
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static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct lm83_data *data = lm83_update_device(dev);
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
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}
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show_temp(input1, temp_input[0]);
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show_temp(input2, temp_input[1]);
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show_temp(input3, temp_input[2]);
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show_temp(input4, temp_input[3]);
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show_temp(high1, temp_high[0]);
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show_temp(high2, temp_high[1]);
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show_temp(high3, temp_high[2]);
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show_temp(high4, temp_high[3]);
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show_temp(crit, temp_crit);
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#define set_temp(suffix, value, reg) \
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static ssize_t set_temp_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \
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size_t count) \
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{ \
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struct i2c_client *client = to_i2c_client(dev); \
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struct lm83_data *data = i2c_get_clientdata(client); \
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long val = simple_strtol(buf, NULL, 10); \
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\
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down(&data->update_lock); \
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data->value = TEMP_TO_REG(val); \
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i2c_smbus_write_byte_data(client, reg, data->value); \
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up(&data->update_lock); \
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return count; \
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static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct i2c_client *client = to_i2c_client(dev);
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struct lm83_data *data = i2c_get_clientdata(client);
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long val = simple_strtol(buf, NULL, 10);
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int nr = attr->index;
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down(&data->update_lock);
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data->temp[nr] = TEMP_TO_REG(val);
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i2c_smbus_write_byte_data(client, LM83_REG_W_HIGH[nr - 4],
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data->temp[nr]);
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up(&data->update_lock);
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return count;
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}
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set_temp(high1, temp_high[0], LM83_REG_W_LOCAL_HIGH);
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set_temp(high2, temp_high[1], LM83_REG_W_REMOTE1_HIGH);
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set_temp(high3, temp_high[2], LM83_REG_W_REMOTE2_HIGH);
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set_temp(high4, temp_high[3], LM83_REG_W_REMOTE3_HIGH);
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set_temp(crit, temp_crit, LM83_REG_W_TCRIT);
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static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
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static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy,
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char *buf)
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{
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struct lm83_data *data = lm83_update_device(dev);
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return sprintf(buf, "%d\n", data->alarms);
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}
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static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);
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static DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input2, NULL);
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static DEVICE_ATTR(temp3_input, S_IRUGO, show_temp_input3, NULL);
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static DEVICE_ATTR(temp4_input, S_IRUGO, show_temp_input4, NULL);
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static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_high1,
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set_temp_high1);
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static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_high2,
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set_temp_high2);
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static DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_high3,
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set_temp_high3);
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static DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_high4,
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set_temp_high4);
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static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL);
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static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL);
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static DEVICE_ATTR(temp3_crit, S_IWUSR | S_IRUGO, show_temp_crit,
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set_temp_crit);
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static DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL);
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static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
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static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
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static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
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static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
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static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp,
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set_temp, 4);
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static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp,
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set_temp, 5);
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static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp,
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set_temp, 6);
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static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp,
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set_temp, 7);
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static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp, NULL, 8);
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static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp, NULL, 8);
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static SENSOR_DEVICE_ATTR(temp3_crit, S_IWUSR | S_IRUGO, show_temp,
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set_temp, 8);
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static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp, NULL, 8);
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static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
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/*
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@ -322,18 +312,30 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind)
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*/
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/* Register sysfs hooks */
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device_create_file(&new_client->dev, &dev_attr_temp1_input);
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device_create_file(&new_client->dev, &dev_attr_temp2_input);
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device_create_file(&new_client->dev, &dev_attr_temp3_input);
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device_create_file(&new_client->dev, &dev_attr_temp4_input);
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device_create_file(&new_client->dev, &dev_attr_temp1_max);
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device_create_file(&new_client->dev, &dev_attr_temp2_max);
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device_create_file(&new_client->dev, &dev_attr_temp3_max);
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device_create_file(&new_client->dev, &dev_attr_temp4_max);
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device_create_file(&new_client->dev, &dev_attr_temp1_crit);
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device_create_file(&new_client->dev, &dev_attr_temp2_crit);
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device_create_file(&new_client->dev, &dev_attr_temp3_crit);
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device_create_file(&new_client->dev, &dev_attr_temp4_crit);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp1_input.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp2_input.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp3_input.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp4_input.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp1_max.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp2_max.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp3_max.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp4_max.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp1_crit.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp2_crit.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp3_crit.dev_attr);
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device_create_file(&new_client->dev,
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&sensor_dev_attr_temp4_crit.dev_attr);
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device_create_file(&new_client->dev, &dev_attr_alarms);
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return 0;
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@ -369,16 +371,11 @@ static struct lm83_data *lm83_update_device(struct device *dev)
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int nr;
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dev_dbg(&client->dev, "Updating lm83 data.\n");
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for (nr = 0; nr < 4 ; nr++) {
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data->temp_input[nr] =
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for (nr = 0; nr < 9; nr++) {
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data->temp[nr] =
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i2c_smbus_read_byte_data(client,
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LM83_REG_R_TEMP[nr]);
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data->temp_high[nr] =
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i2c_smbus_read_byte_data(client,
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LM83_REG_R_HIGH[nr]);
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}
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data->temp_crit =
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i2c_smbus_read_byte_data(client, LM83_REG_R_TCRIT);
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data->alarms =
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i2c_smbus_read_byte_data(client, LM83_REG_R_STATUS1)
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+ (i2c_smbus_read_byte_data(client, LM83_REG_R_STATUS2)
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