mirror of https://gitee.com/openkylin/linux.git
hwmon: (lm77) Drop function macros
Function macros make the code harder to read and increase code size, so drop them. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck
parent
50bf46509f
commit
48dbd6ff14
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@ -43,17 +43,30 @@ static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b,
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#define LM77_REG_TEMP_MIN 0x04
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#define LM77_REG_TEMP_MAX 0x05
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enum temp_index {
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t_input = 0,
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t_crit,
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t_min,
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t_max,
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t_hyst,
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t_num_temp
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};
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static const u8 temp_regs[t_num_temp] = {
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[t_input] = LM77_REG_TEMP,
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[t_min] = LM77_REG_TEMP_MIN,
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[t_max] = LM77_REG_TEMP_MAX,
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[t_crit] = LM77_REG_TEMP_CRIT,
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[t_hyst] = LM77_REG_TEMP_HYST,
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};
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/* Each client has this additional data */
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struct lm77_data {
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struct device *hwmon_dev;
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struct mutex update_lock;
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char valid;
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unsigned long last_updated; /* In jiffies */
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int temp_input; /* Temperatures */
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int temp_crit;
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int temp_min;
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int temp_max;
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int temp_hyst;
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int temp[t_num_temp]; /* index using temp_index */
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u8 alarms;
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};
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@ -100,27 +113,18 @@ static struct lm77_data *lm77_update_device(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct lm77_data *data = i2c_get_clientdata(client);
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int i;
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mutex_lock(&data->update_lock);
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if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
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|| !data->valid) {
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dev_dbg(&client->dev, "Starting lm77 update\n");
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data->temp_input =
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LM77_TEMP_FROM_REG(lm77_read_value(client,
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LM77_REG_TEMP));
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data->temp_hyst =
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LM77_TEMP_FROM_REG(lm77_read_value(client,
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LM77_REG_TEMP_HYST));
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data->temp_crit =
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LM77_TEMP_FROM_REG(lm77_read_value(client,
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LM77_REG_TEMP_CRIT));
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data->temp_min =
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LM77_TEMP_FROM_REG(lm77_read_value(client,
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LM77_REG_TEMP_MIN));
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data->temp_max =
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LM77_TEMP_FROM_REG(lm77_read_value(client,
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LM77_REG_TEMP_MAX));
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for (i = 0; i < t_num_temp; i++) {
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data->temp[i] =
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LM77_TEMP_FROM_REG(lm77_read_value(client,
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temp_regs[i]));
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}
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data->alarms =
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lm77_read_value(client, LM77_REG_TEMP) & 0x0007;
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data->last_updated = jiffies;
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@ -134,89 +138,56 @@ static struct lm77_data *lm77_update_device(struct device *dev)
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/* sysfs stuff */
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/* read routines for temperature limits */
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#define show(value) \
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static ssize_t show_##value(struct device *dev, \
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struct device_attribute *attr, \
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char *buf) \
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{ \
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struct lm77_data *data = lm77_update_device(dev); \
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return sprintf(buf, "%d\n", data->value); \
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}
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show(temp_input);
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show(temp_crit);
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show(temp_min);
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show(temp_max);
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/* read routines for hysteresis values */
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static ssize_t show_temp_crit_hyst(struct device *dev,
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struct device_attribute *attr, char *buf)
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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 lm77_data *data = lm77_update_device(dev);
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return sprintf(buf, "%d\n", data->temp_crit - data->temp_hyst);
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return sprintf(buf, "%d\n", data->temp[attr->index]);
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}
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static ssize_t show_temp_min_hyst(struct device *dev,
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struct device_attribute *attr, char *buf)
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static ssize_t show_temp_hyst(struct device *dev,
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struct device_attribute *devattr, 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 lm77_data *data = lm77_update_device(dev);
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return sprintf(buf, "%d\n", data->temp_min + data->temp_hyst);
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int nr = attr->index;
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int temp;
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temp = nr == t_min ? data->temp[nr] + data->temp[t_hyst] :
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data->temp[nr] - data->temp[t_hyst];
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return sprintf(buf, "%d\n", temp);
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}
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static ssize_t show_temp_max_hyst(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct lm77_data *data = lm77_update_device(dev);
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return sprintf(buf, "%d\n", data->temp_max - data->temp_hyst);
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}
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/* write routines */
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#define set(value, reg) \
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static ssize_t set_##value(struct device *dev, struct device_attribute *attr, \
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const char *buf, size_t count) \
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{ \
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struct i2c_client *client = to_i2c_client(dev); \
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struct lm77_data *data = i2c_get_clientdata(client); \
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long val; \
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int err = kstrtol(buf, 10, &val); \
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if (err) \
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return err; \
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\
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mutex_lock(&data->update_lock); \
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data->value = val; \
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lm77_write_value(client, reg, LM77_TEMP_TO_REG(data->value)); \
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mutex_unlock(&data->update_lock); \
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return count; \
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}
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set(temp_min, LM77_REG_TEMP_MIN);
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set(temp_max, LM77_REG_TEMP_MAX);
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/*
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* hysteresis is stored as a relative value on the chip, so it has to be
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* converted first
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*/
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static ssize_t set_temp_crit_hyst(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t 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 lm77_data *data = i2c_get_clientdata(client);
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unsigned long val;
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int nr = attr->index;
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long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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err = kstrtol(buf, 10, &val);
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if (err)
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return err;
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mutex_lock(&data->update_lock);
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data->temp_hyst = data->temp_crit - val;
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lm77_write_value(client, LM77_REG_TEMP_HYST,
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LM77_TEMP_TO_REG(data->temp_hyst));
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data->temp[nr] = val;
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lm77_write_value(client, temp_regs[nr], LM77_TEMP_TO_REG(val));
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
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/*
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* hysteresis is stored as a relative value on the chip, so it has to be
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* converted first.
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*/
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static ssize_t set_temp_hyst(struct device *dev,
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struct device_attribute *devattr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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@ -229,9 +200,9 @@ static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
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return err;
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mutex_lock(&data->update_lock);
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data->temp_crit = val;
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lm77_write_value(client, LM77_REG_TEMP_CRIT,
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LM77_TEMP_TO_REG(data->temp_crit));
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data->temp[t_hyst] = data->temp[t_crit] - val;
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lm77_write_value(client, LM77_REG_TEMP_HYST,
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LM77_TEMP_TO_REG(data->temp[t_hyst]));
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mutex_unlock(&data->update_lock);
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return count;
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}
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@ -244,34 +215,31 @@ static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
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return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
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}
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static DEVICE_ATTR(temp1_input, S_IRUGO,
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show_temp_input, NULL);
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static DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO,
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show_temp_crit, set_temp_crit);
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static DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO,
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show_temp_min, set_temp_min);
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static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
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show_temp_max, set_temp_max);
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static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, t_input);
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static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp, set_temp,
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t_crit);
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static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp, set_temp,
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t_min);
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static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp, set_temp,
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t_max);
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static DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO,
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show_temp_crit_hyst, set_temp_crit_hyst);
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static DEVICE_ATTR(temp1_min_hyst, S_IRUGO,
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show_temp_min_hyst, NULL);
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static DEVICE_ATTR(temp1_max_hyst, S_IRUGO,
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show_temp_max_hyst, NULL);
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static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_hyst,
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set_temp_hyst, t_crit);
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static SENSOR_DEVICE_ATTR(temp1_min_hyst, S_IRUGO, show_temp_hyst, NULL, t_min);
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static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO, show_temp_hyst, NULL, t_max);
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static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 2);
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static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_alarm, NULL, 0);
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static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 1);
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static struct attribute *lm77_attributes[] = {
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&dev_attr_temp1_input.attr,
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&dev_attr_temp1_crit.attr,
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&dev_attr_temp1_min.attr,
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&dev_attr_temp1_max.attr,
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&dev_attr_temp1_crit_hyst.attr,
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&dev_attr_temp1_min_hyst.attr,
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&dev_attr_temp1_max_hyst.attr,
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&sensor_dev_attr_temp1_input.dev_attr.attr,
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&sensor_dev_attr_temp1_crit.dev_attr.attr,
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&sensor_dev_attr_temp1_min.dev_attr.attr,
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&sensor_dev_attr_temp1_max.dev_attr.attr,
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&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
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&sensor_dev_attr_temp1_min_hyst.dev_attr.attr,
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&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
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&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
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&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
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&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
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