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Commit 10192bc6 authored by Guenter Roeck's avatar Guenter Roeck
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hwmon: (jc42) Convert function macros into functions 

Convert function macros into functions to make the code
easier to read and reduce code size.
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent d397276b
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Showing with 72 additions and 110 deletions
drivers/hwmon/jc42.c
View file @ 10192bc6
......@@ -161,6 +161,21 @@ static struct jc42_chips jc42_chips[] = {
{ STM_MANID, STTS3000_DEVID, STTS3000_DEVID_MASK },
};
enum temp_index {
t_input = 0,
t_crit,
t_min,
t_max,
t_num_temp
};
static const u8 temp_regs[t_num_temp] = {
[t_input] = JC42_REG_TEMP,
[t_crit] = JC42_REG_TEMP_CRITICAL,
[t_min] = JC42_REG_TEMP_LOWER,
[t_max] = JC42_REG_TEMP_UPPER,
};
/* Each client has this additional data */
struct jc42_data {
struct i2c_client *client;
......@@ -170,10 +185,7 @@ struct jc42_data {
unsigned long last_updated; /* In jiffies */
u16 orig_config; /* original configuration */
u16 config; /* current configuration */
u16 temp_input; /* Temperatures */
u16 temp_crit;
u16 temp_min;
u16 temp_max;
u16 temp[t_num_temp];/* Temperatures */
};
#define JC42_TEMP_MIN_EXTENDED (-40000)
......@@ -207,40 +219,19 @@ static struct jc42_data *jc42_update_device(struct device *dev)
struct jc42_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
struct jc42_data *ret = data;
int val;
int i, val;
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
val = i2c_smbus_read_word_swapped(client, JC42_REG_TEMP);
if (val < 0) {
ret = ERR_PTR(val);
goto abort;
}
data->temp_input = val;
val = i2c_smbus_read_word_swapped(client,
JC42_REG_TEMP_CRITICAL);
if (val < 0) {
ret = ERR_PTR(val);
goto abort;
}
data->temp_crit = val;
val = i2c_smbus_read_word_swapped(client, JC42_REG_TEMP_LOWER);
for (i = 0; i < t_num_temp; i++) {
val = i2c_smbus_read_word_swapped(client, temp_regs[i]);
if (val < 0) {
ret = ERR_PTR(val);
goto abort;
}
data->temp_min = val;
val = i2c_smbus_read_word_swapped(client, JC42_REG_TEMP_UPPER);
if (val < 0) {
ret = ERR_PTR(val);
goto abort;
data->temp[i] = val;
}
data->temp_max = val;
data->last_updated = jiffies;
data->valid = true;
}
......@@ -249,79 +240,55 @@ static struct jc42_data *jc42_update_device(struct device *dev)
return ret;
}
/* sysfs stuff */
/* read routines for temperature limits */
#define show(value) \
static ssize_t show_##value(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
struct jc42_data *data = jc42_update_device(dev); \
if (IS_ERR(data)) \
return PTR_ERR(data); \
return sprintf(buf, "%d\n", jc42_temp_from_reg(data->value)); \
}
show(temp_input);
show(temp_crit);
show(temp_min);
show(temp_max);
/* sysfs functions */
/* read routines for hysteresis values */
static ssize_t show_temp_crit_hyst(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct jc42_data *data = jc42_update_device(dev);
int temp, hyst;
if (IS_ERR(data))
return PTR_ERR(data);
temp = jc42_temp_from_reg(data->temp_crit);
hyst = jc42_hysteresis[(data->config & JC42_CFG_HYST_MASK)
>> JC42_CFG_HYST_SHIFT];
return sprintf(buf, "%d\n", temp - hyst);
return sprintf(buf, "%d\n",
jc42_temp_from_reg(data->temp[attr->index]));
}
static ssize_t show_temp_max_hyst(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t show_temp_hyst(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct jc42_data *data = jc42_update_device(dev);
int temp, hyst;
if (IS_ERR(data))
return PTR_ERR(data);
temp = jc42_temp_from_reg(data->temp_max);
temp = jc42_temp_from_reg(data->temp[attr->index]);
hyst = jc42_hysteresis[(data->config & JC42_CFG_HYST_MASK)
>> JC42_CFG_HYST_SHIFT];
return sprintf(buf, "%d\n", temp - hyst);
}
/* write routines */
#define set(value, reg) \
static ssize_t set_##value(struct device *dev, \
struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
struct jc42_data *data = dev_get_drvdata(dev); \
int err, ret = count; \
long val; \
if (kstrtol(buf, 10, &val) < 0) \
return -EINVAL; \
mutex_lock(&data->update_lock); \
data->value = jc42_temp_to_reg(val, data->extended); \
err = i2c_smbus_write_word_swapped(data->client, reg, data->value); \
if (err < 0) \
ret = err; \
mutex_unlock(&data->update_lock); \
return ret; \
}
static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct jc42_data *data = dev_get_drvdata(dev);
int err, ret = count;
int nr = attr->index;
long val;
set(temp_min, JC42_REG_TEMP_LOWER);
set(temp_max, JC42_REG_TEMP_UPPER);
set(temp_crit, JC42_REG_TEMP_CRITICAL);
if (kstrtol(buf, 10, &val) < 0)
return -EINVAL;
mutex_lock(&data->update_lock);
data->temp[nr] = jc42_temp_to_reg(val, data->extended);
err = i2c_smbus_write_word_swapped(data->client, temp_regs[nr],
data->temp[nr]);
if (err < 0)
ret = err;
mutex_unlock(&data->update_lock);
return ret;
}
/*
* JC42.4 compliant chips only support four hysteresis values.
......@@ -340,7 +307,7 @@ static ssize_t set_temp_crit_hyst(struct device *dev,
if (kstrtoul(buf, 10, &val) < 0)
return -EINVAL;
diff = jc42_temp_from_reg(data->temp_crit) - val;
diff = jc42_temp_from_reg(data->temp[t_crit]) - val;
hyst = 0;
if (diff > 0) {
if (diff < 2250)
......@@ -372,25 +339,20 @@ static ssize_t show_alarm(struct device *dev,
if (IS_ERR(data))
return PTR_ERR(data);
val = data->temp_input;
val = data->temp[t_input];
if (bit != JC42_ALARM_CRIT_BIT && (data->config & JC42_CFG_CRIT_ONLY))
val = 0;
return sprintf(buf, "%u\n", (val >> bit) & 1);
}
static DEVICE_ATTR(temp1_input, S_IRUGO,
show_temp_input, NULL);
static DEVICE_ATTR(temp1_crit, S_IRUGO,
show_temp_crit, set_temp_crit);
static DEVICE_ATTR(temp1_min, S_IRUGO,
show_temp_min, set_temp_min);
static DEVICE_ATTR(temp1_max, S_IRUGO,
show_temp_max, set_temp_max);
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, t_input);
static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp, set_temp, t_crit);
static SENSOR_DEVICE_ATTR(temp1_min, S_IRUGO, show_temp, set_temp, t_min);
static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp, set_temp, t_max);
static DEVICE_ATTR(temp1_crit_hyst, S_IRUGO,
show_temp_crit_hyst, set_temp_crit_hyst);
static DEVICE_ATTR(temp1_max_hyst, S_IRUGO,
show_temp_max_hyst, NULL);
static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO, show_temp_hyst,
set_temp_crit_hyst, t_crit);
static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO, show_temp_hyst, NULL, t_max);
static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL,
JC42_ALARM_CRIT_BIT);
......@@ -400,12 +362,12 @@ static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL,
JC42_ALARM_MAX_BIT);
static struct attribute *jc42_attributes[] = {
&dev_attr_temp1_input.attr,
&dev_attr_temp1_crit.attr,
&dev_attr_temp1_min.attr,
&dev_attr_temp1_max.attr,
&dev_attr_temp1_crit_hyst.attr,
&dev_attr_temp1_max_hyst.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp1_crit.dev_attr.attr,
&sensor_dev_attr_temp1_min.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
&sensor_dev_attr_temp1_max_hyst.dev_attr.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,
......@@ -420,12 +382,12 @@ static umode_t jc42_attribute_mode(struct kobject *kobj,
unsigned int config = data->config;
bool readonly;
if (attr == &dev_attr_temp1_crit.attr)
if (attr == &sensor_dev_attr_temp1_crit.dev_attr.attr)
readonly = config & JC42_CFG_TCRIT_LOCK;
else if (attr == &dev_attr_temp1_min.attr ||
attr == &dev_attr_temp1_max.attr)
else if (attr == &sensor_dev_attr_temp1_min.dev_attr.attr ||
attr == &sensor_dev_attr_temp1_max.dev_attr.attr)
readonly = config & JC42_CFG_EVENT_LOCK;
else if (attr == &dev_attr_temp1_crit_hyst.attr)
else if (attr == &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr)
readonly = config & (JC42_CFG_EVENT_LOCK | JC42_CFG_TCRIT_LOCK);
else
readonly = true;
......
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