hwmon/lm78: Use dynamic sysfs callbacks

This lets us get rid of macro-generated functions and shrinks the
driver size significantly (about 10%).

Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 101 insertions, 124 deletions

diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c
index cc68c85e1561..9fb572f03ba5 100644
--- a/drivers/hwmon/lm78.c
+++ b/drivers/hwmon/lm78.c
@@ -28,6 +28,7 @@
 #include <linux/ioport.h>
 #include <linux/hwmon.h>
 #include <linux/hwmon-vid.h>
+#include <linux/hwmon-sysfs.h>
 #include <linux/err.h>
 #include <linux/mutex.h>
 #include <asm/io.h>
@@ -185,29 +186,37 @@ static struct platform_driver lm78_isa_driver = {
 
 
 /* 7 Voltages */
-static ssize_t show_in(struct device *dev, char *buf, int nr)
+static ssize_t show_in(struct device *dev, struct device_attribute *da,
+                       char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
         struct lm78_data *data = lm78_update_device(dev);
-        return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
+        return sprintf(buf, "%d\n", IN_FROM_REG(data->in[attr->index]));
 }
 
-static ssize_t show_in_min(struct device *dev, char *buf, int nr)
+static ssize_t show_in_min(struct device *dev, struct device_attribute *da,
+                           char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
         struct lm78_data *data = lm78_update_device(dev);
-        return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
+        return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[attr->index]));
 }
 
-static ssize_t show_in_max(struct device *dev, char *buf, int nr)
+static ssize_t show_in_max(struct device *dev, struct device_attribute *da,
+                           char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
         struct lm78_data *data = lm78_update_device(dev);
-        return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
+        return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[attr->index]));
 }
 
-static ssize_t set_in_min(struct device *dev, const char *buf,
-                size_t count, int nr)
+static ssize_t set_in_min(struct device *dev, struct device_attribute *da,
+                          const char *buf, size_t count)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
         struct lm78_data *data = dev_get_drvdata(dev);
         unsigned long val = simple_strtoul(buf, NULL, 10);
+        int nr = attr->index;
 
         mutex_lock(&data->update_lock);
         data->in_min[nr] = IN_TO_REG(val);
@@ -216,11 +225,13 @@ static ssize_t set_in_min(struct device *dev, const char *buf,
         return count;
 }
 
-static ssize_t set_in_max(struct device *dev, const char *buf,
-                size_t count, int nr)
+static ssize_t set_in_max(struct device *dev, struct device_attribute *da,
+                          const char *buf, size_t count)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
         struct lm78_data *data = dev_get_drvdata(dev);
         unsigned long val = simple_strtoul(buf, NULL, 10);
+        int nr = attr->index;
 
         mutex_lock(&data->update_lock);
         data->in_max[nr] = IN_TO_REG(val);
@@ -230,37 +241,12 @@ static ssize_t set_in_max(struct device *dev, const char *buf,
 }
         
 #define show_in_offset(offset)                                  \
-static ssize_t                                                  \
-        show_in##offset (struct device *dev, struct device_attribute *attr, char *buf)          \
-{                                                               \
-        return show_in(dev, buf, offset);                       \
-}                                                               \
-static DEVICE_ATTR(in##offset##_input, S_IRUGO,                 \
-                show_in##offset, NULL);                         \
-static ssize_t                                                  \
-        show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf)   \
-{                                                               \
-        return show_in_min(dev, buf, offset);                   \
-}                                                               \
-static ssize_t                                                  \
-        show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf)   \
-{                                                               \
-        return show_in_max(dev, buf, offset);                   \
-}                                                               \
-static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr, \
-                const char *buf, size_t count)                  \
-{                                                               \
-        return set_in_min(dev, buf, count, offset);             \
-}                                                               \
-static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr, \
-                const char *buf, size_t count)                  \
-{                                                               \
-        return set_in_max(dev, buf, count, offset);             \
-}                                                               \
-static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,         \
-                show_in##offset##_min, set_in##offset##_min);   \
-static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,         \
-                show_in##offset##_max, set_in##offset##_max);
+static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO,          \
+                show_in, NULL, offset);                         \
+static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,  \
+                show_in_min, set_in_min, offset);               \
+static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,  \
+                show_in_max, set_in_max, offset);
 
 show_in_offset(0);
 show_in_offset(1);
@@ -271,19 +257,22 @@ show_in_offset(5);
 show_in_offset(6);
 
 /* Temperature */
-static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_temp(struct device *dev, struct device_attribute *da,
+                         char *buf)
 {
         struct lm78_data *data = lm78_update_device(dev);
         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
 }
 
-static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_temp_over(struct device *dev, struct device_attribute *da,
+                              char *buf)
 {
         struct lm78_data *data = lm78_update_device(dev);
         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
 }
 
-static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t set_temp_over(struct device *dev, struct device_attribute *da,
+                             const char *buf, size_t count)
 {
         struct lm78_data *data = dev_get_drvdata(dev);
         long val = simple_strtol(buf, NULL, 10);
@@ -295,13 +284,15 @@ static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr,
         return count;
 }
 
-static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *da,
+                              char *buf)
 {
         struct lm78_data *data = lm78_update_device(dev);
         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
 }
 
-static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *da,
+                             const char *buf, size_t count)
 {
         struct lm78_data *data = dev_get_drvdata(dev);
         long val = simple_strtol(buf, NULL, 10);
@@ -320,24 +311,32 @@ static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR,
                 show_temp_hyst, set_temp_hyst);
 
 /* 3 Fans */
-static ssize_t show_fan(struct device *dev, char *buf, int nr)
+static ssize_t show_fan(struct device *dev, struct device_attribute *da,
+                        char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
         struct lm78_data *data = lm78_update_device(dev);
+        int nr = attr->index;
         return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
                 DIV_FROM_REG(data->fan_div[nr])) );
 }
 
-static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
+static ssize_t show_fan_min(struct device *dev, struct device_attribute *da,
+                            char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
         struct lm78_data *data = lm78_update_device(dev);
+        int nr = attr->index;
         return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr],
                 DIV_FROM_REG(data->fan_div[nr])) );
 }
 
-static ssize_t set_fan_min(struct device *dev, const char *buf,
-                size_t count, int nr)
+static ssize_t set_fan_min(struct device *dev, struct device_attribute *da,
+                           const char *buf, size_t count)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
         struct lm78_data *data = dev_get_drvdata(dev);
+        int nr = attr->index;
         unsigned long val = simple_strtoul(buf, NULL, 10);
 
         mutex_lock(&data->update_lock);
@@ -347,20 +346,24 @@ static ssize_t set_fan_min(struct device *dev, const char *buf,
         return count;
 }
 
-static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
+static ssize_t show_fan_div(struct device *dev, struct device_attribute *da,
+                            char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
         struct lm78_data *data = lm78_update_device(dev);
-        return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) );
+        return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[attr->index]));
 }
 
 /* Note: we save and restore the fan minimum here, because its value is
    determined in part by the fan divisor.  This follows the principle of
    least surprise; the user doesn't expect the fan minimum to change just
    because the divisor changed. */
-static ssize_t set_fan_div(struct device *dev, const char *buf,
-        size_t count, int nr)
+static ssize_t set_fan_div(struct device *dev, struct device_attribute *da,
+                           const char *buf, size_t count)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
         struct lm78_data *data = dev_get_drvdata(dev);
+        int nr = attr->index;
         unsigned long val = simple_strtoul(buf, NULL, 10);
         unsigned long min;
         u8 reg;
@@ -400,53 +403,26 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
         return count;
 }
 
-#define show_fan_offset(offset)                                         \
-static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
-{                                                                       \
-        return show_fan(dev, buf, offset - 1);                          \
-}                                                                       \
-static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf)  \
-{                                                                       \
-        return show_fan_min(dev, buf, offset - 1);                      \
-}                                                                       \
-static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf)  \
-{                                                                       \
-        return show_fan_div(dev, buf, offset - 1);                      \
-}                                                                       \
-static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr,               \
-                const char *buf, size_t count)                          \
-{                                                                       \
-        return set_fan_min(dev, buf, count, offset - 1);                \
-}                                                                       \
-static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\
-static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,                \
-                show_fan_##offset##_min, set_fan_##offset##_min);
-
-static ssize_t set_fan_1_div(struct device *dev, struct device_attribute *attr, const char *buf,
-                size_t count)
-{
-        return set_fan_div(dev, buf, count, 0) ;
-}
-
-static ssize_t set_fan_2_div(struct device *dev, struct device_attribute *attr, const char *buf,
-                size_t count)
-{
-        return set_fan_div(dev, buf, count, 1) ;
-}
+#define show_fan_offset(offset)                         \
+static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO,         \
+                show_fan, NULL, offset - 1);                    \
+static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
+                show_fan_min, set_fan_min, offset - 1);
 
 show_fan_offset(1);
 show_fan_offset(2);
 show_fan_offset(3);
 
 /* Fan 3 divisor is locked in H/W */
-static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
-                show_fan_1_div, set_fan_1_div);
-static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
-                show_fan_2_div, set_fan_2_div);
-static DEVICE_ATTR(fan3_div, S_IRUGO, show_fan_3_div, NULL);
+static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR,
+                show_fan_div, set_fan_div, 0);
+static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR,
+                show_fan_div, set_fan_div, 1);
+static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2);
 
 /* VID */
-static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_vid(struct device *dev, struct device_attribute *da,
+                        char *buf)
 {
         struct lm78_data *data = lm78_update_device(dev);
         return sprintf(buf, "%d\n", vid_from_reg(data->vid, 82));
@@ -454,7 +430,8 @@ static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char
 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 
 /* Alarms */
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_alarms(struct device *dev, struct device_attribute *da,
+                           char *buf)
 {
         struct lm78_data *data = lm78_update_device(dev);
         return sprintf(buf, "%u\n", data->alarms);
@@ -473,39 +450,39 @@ static int lm78_attach_adapter(struct i2c_adapter *adapter)
 }
 
 static struct attribute *lm78_attributes[] = {
-        &dev_attr_in0_input.attr,
-        &dev_attr_in0_min.attr,
-        &dev_attr_in0_max.attr,
-        &dev_attr_in1_input.attr,
-        &dev_attr_in1_min.attr,
-        &dev_attr_in1_max.attr,
-        &dev_attr_in2_input.attr,
-        &dev_attr_in2_min.attr,
-        &dev_attr_in2_max.attr,
-        &dev_attr_in3_input.attr,
-        &dev_attr_in3_min.attr,
-        &dev_attr_in3_max.attr,
-        &dev_attr_in4_input.attr,
-        &dev_attr_in4_min.attr,
-        &dev_attr_in4_max.attr,
-        &dev_attr_in5_input.attr,
-        &dev_attr_in5_min.attr,
-        &dev_attr_in5_max.attr,
-        &dev_attr_in6_input.attr,
-        &dev_attr_in6_min.attr,
-        &dev_attr_in6_max.attr,
+        &sensor_dev_attr_in0_input.dev_attr.attr,
+        &sensor_dev_attr_in0_min.dev_attr.attr,
+        &sensor_dev_attr_in0_max.dev_attr.attr,
+        &sensor_dev_attr_in1_input.dev_attr.attr,
+        &sensor_dev_attr_in1_min.dev_attr.attr,
+        &sensor_dev_attr_in1_max.dev_attr.attr,
+        &sensor_dev_attr_in2_input.dev_attr.attr,
+        &sensor_dev_attr_in2_min.dev_attr.attr,
+        &sensor_dev_attr_in2_max.dev_attr.attr,
+        &sensor_dev_attr_in3_input.dev_attr.attr,
+        &sensor_dev_attr_in3_min.dev_attr.attr,
+        &sensor_dev_attr_in3_max.dev_attr.attr,
+        &sensor_dev_attr_in4_input.dev_attr.attr,
+        &sensor_dev_attr_in4_min.dev_attr.attr,
+        &sensor_dev_attr_in4_max.dev_attr.attr,
+        &sensor_dev_attr_in5_input.dev_attr.attr,
+        &sensor_dev_attr_in5_min.dev_attr.attr,
+        &sensor_dev_attr_in5_max.dev_attr.attr,
+        &sensor_dev_attr_in6_input.dev_attr.attr,
+        &sensor_dev_attr_in6_min.dev_attr.attr,
+        &sensor_dev_attr_in6_max.dev_attr.attr,
         &dev_attr_temp1_input.attr,
         &dev_attr_temp1_max.attr,
         &dev_attr_temp1_max_hyst.attr,
-        &dev_attr_fan1_input.attr,
-        &dev_attr_fan1_min.attr,
-        &dev_attr_fan1_div.attr,
-        &dev_attr_fan2_input.attr,
-        &dev_attr_fan2_min.attr,
-        &dev_attr_fan2_div.attr,
-        &dev_attr_fan3_input.attr,
-        &dev_attr_fan3_min.attr,
-        &dev_attr_fan3_div.attr,
+        &sensor_dev_attr_fan1_input.dev_attr.attr,
+        &sensor_dev_attr_fan1_min.dev_attr.attr,
+        &sensor_dev_attr_fan1_div.dev_attr.attr,
+        &sensor_dev_attr_fan2_input.dev_attr.attr,
+        &sensor_dev_attr_fan2_min.dev_attr.attr,
+        &sensor_dev_attr_fan2_div.dev_attr.attr,
+        &sensor_dev_attr_fan3_input.dev_attr.attr,
+        &sensor_dev_attr_fan3_min.dev_attr.attr,
+        &sensor_dev_attr_fan3_div.dev_attr.attr,
         &dev_attr_alarms.attr,
         &dev_attr_cpu0_vid.attr,