ad525x_dpot: simplify duplicated sysfs defines

Macro away the duplication to make maintenance easier.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/misc/ad525x_dpot.c b/drivers/misc/ad525x_dpot.c
index 30a59f2..e6b274b 100644 (file)
--- a/drivers/misc/ad525x_dpot.c
+++ b/drivers/misc/ad525x_dpot.c
@@ -158,175 +158,45 @@ static ssize_t sysfs_do_cmd(struct device *dev,
 
 /* ------------------------------------------------------------------------- */
 
-static ssize_t show_rdac0(struct device *dev,
-                         struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf, AD525X_I2C_RDAC | AD525X_RDAC0);
-}
-
-static ssize_t set_rdac0(struct device *dev,
-                        struct device_attribute *attr,
-                        const char *buf, size_t count)
-{
-       return sysfs_set_reg(dev, attr, buf, count,
-                            AD525X_I2C_RDAC | AD525X_RDAC0);
-}
-
-static DEVICE_ATTR(rdac0, S_IWUSR | S_IRUGO, show_rdac0, set_rdac0);
-
-static ssize_t show_eeprom0(struct device *dev,
-                           struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf, AD525X_I2C_EEPROM | AD525X_RDAC0);
-}
-
-static ssize_t set_eeprom0(struct device *dev,
-                          struct device_attribute *attr,
-                          const char *buf, size_t count)
-{
-       return sysfs_set_reg(dev, attr, buf, count,
-                            AD525X_I2C_EEPROM | AD525X_RDAC0);
-}
-
-static DEVICE_ATTR(eeprom0, S_IWUSR | S_IRUGO, show_eeprom0, set_eeprom0);
-
-static ssize_t show_tolerance0(struct device *dev,
-                              struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf,
-                             AD525X_I2C_EEPROM | AD525X_TOL_RDAC0);
-}
-
-static DEVICE_ATTR(tolerance0, S_IRUGO, show_tolerance0, NULL);
-
-/* ------------------------------------------------------------------------- */
-
-static ssize_t show_rdac1(struct device *dev,
-                         struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf, AD525X_I2C_RDAC | AD525X_RDAC1);
+#define DPOT_DEVICE_SHOW(_name, _reg) static ssize_t \
+show_##_name(struct device *dev, \
+                         struct device_attribute *attr, char *buf) \
+{ \
+       return sysfs_show_reg(dev, attr, buf, _reg); \
 }
 
-static ssize_t set_rdac1(struct device *dev,
-                        struct device_attribute *attr,
-                        const char *buf, size_t count)
-{
-       return sysfs_set_reg(dev, attr, buf, count,
-                            AD525X_I2C_RDAC | AD525X_RDAC1);
+#define DPOT_DEVICE_SET(_name, _reg) static ssize_t \
+set_##_name(struct device *dev, \
+                        struct device_attribute *attr, \
+                        const char *buf, size_t count) \
+{ \
+       return sysfs_set_reg(dev, attr, buf, count, _reg); \
 }
 
-static DEVICE_ATTR(rdac1, S_IWUSR | S_IRUGO, show_rdac1, set_rdac1);
+#define DPOT_DEVICE_SHOW_SET(name, reg) \
+DPOT_DEVICE_SHOW(name, reg) \
+DPOT_DEVICE_SET(name, reg) \
+static DEVICE_ATTR(name, S_IWUSR | S_IRUGO, show_##name, set_##name);
 
-static ssize_t show_eeprom1(struct device *dev,
-                           struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf, AD525X_I2C_EEPROM | AD525X_RDAC1);
-}
+#define DPOT_DEVICE_SHOW_ONLY(name, reg) \
+DPOT_DEVICE_SHOW(name, reg) \
+static DEVICE_ATTR(name, S_IWUSR | S_IRUGO, show_##name, NULL);
 
-static ssize_t set_eeprom1(struct device *dev,
-                          struct device_attribute *attr,
-                          const char *buf, size_t count)
-{
-       return sysfs_set_reg(dev, attr, buf, count,
-                            AD525X_I2C_EEPROM | AD525X_RDAC1);
-}
+DPOT_DEVICE_SHOW_SET(rdac0, AD525X_I2C_RDAC | AD525X_RDAC0);
+DPOT_DEVICE_SHOW_SET(eeprom0, AD525X_I2C_EEPROM | AD525X_RDAC0);
+DPOT_DEVICE_SHOW_ONLY(tolerance0, AD525X_I2C_EEPROM | AD525X_TOL_RDAC0);
 
-static DEVICE_ATTR(eeprom1, S_IWUSR | S_IRUGO, show_eeprom1, set_eeprom1);
+DPOT_DEVICE_SHOW_SET(rdac1, AD525X_I2C_RDAC | AD525X_RDAC1);
+DPOT_DEVICE_SHOW_SET(eeprom1, AD525X_I2C_EEPROM | AD525X_RDAC1);
+DPOT_DEVICE_SHOW_ONLY(tolerance1, AD525X_I2C_EEPROM | AD525X_TOL_RDAC1);
 
-static ssize_t show_tolerance1(struct device *dev,
-                              struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf,
-                             AD525X_I2C_EEPROM | AD525X_TOL_RDAC1);
-}
-
-static DEVICE_ATTR(tolerance1, S_IRUGO, show_tolerance1, NULL);
+DPOT_DEVICE_SHOW_SET(rdac2, AD525X_I2C_RDAC | AD525X_RDAC2);
+DPOT_DEVICE_SHOW_SET(eeprom2, AD525X_I2C_EEPROM | AD525X_RDAC2);
+DPOT_DEVICE_SHOW_ONLY(tolerance2, AD525X_I2C_EEPROM | AD525X_TOL_RDAC2);
 
-/* ------------------------------------------------------------------------- */
-
-static ssize_t show_rdac2(struct device *dev,
-                         struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf, AD525X_I2C_RDAC | AD525X_RDAC2);
-}
-
-static ssize_t set_rdac2(struct device *dev,
-                        struct device_attribute *attr,
-                        const char *buf, size_t count)
-{
-       return sysfs_set_reg(dev, attr, buf, count,
-                            AD525X_I2C_RDAC | AD525X_RDAC2);
-}
-
-static DEVICE_ATTR(rdac2, S_IWUSR | S_IRUGO, show_rdac2, set_rdac2);
-
-static ssize_t show_eeprom2(struct device *dev,
-                           struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf, AD525X_I2C_EEPROM | AD525X_RDAC2);
-}
-
-static ssize_t set_eeprom2(struct device *dev,
-                          struct device_attribute *attr,
-                          const char *buf, size_t count)
-{
-       return sysfs_set_reg(dev, attr, buf, count,
-                            AD525X_I2C_EEPROM | AD525X_RDAC2);
-}
-
-static DEVICE_ATTR(eeprom2, S_IWUSR | S_IRUGO, show_eeprom2, set_eeprom2);
-
-static ssize_t show_tolerance2(struct device *dev,
-                              struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf,
-                             AD525X_I2C_EEPROM | AD525X_TOL_RDAC2);
-}
-
-static DEVICE_ATTR(tolerance2, S_IRUGO, show_tolerance2, NULL);
-
-/* ------------------------------------------------------------------------- */
-
-static ssize_t show_rdac3(struct device *dev,
-                         struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf, AD525X_I2C_RDAC | AD525X_RDAC3);
-}
-
-static ssize_t set_rdac3(struct device *dev,
-                        struct device_attribute *attr,
-                        const char *buf, size_t count)
-{
-       return sysfs_set_reg(dev, attr, buf, count,
-                            AD525X_I2C_RDAC | AD525X_RDAC3);
-}
-
-static DEVICE_ATTR(rdac3, S_IWUSR | S_IRUGO, show_rdac3, set_rdac3);
-
-static ssize_t show_eeprom3(struct device *dev,
-                           struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf, AD525X_I2C_EEPROM | AD525X_RDAC3);
-}
-
-static ssize_t set_eeprom3(struct device *dev,
-                          struct device_attribute *attr,
-                          const char *buf, size_t count)
-{
-       return sysfs_set_reg(dev, attr, buf, count,
-                            AD525X_I2C_EEPROM | AD525X_RDAC3);
-}
-
-static DEVICE_ATTR(eeprom3, S_IWUSR | S_IRUGO, show_eeprom3, set_eeprom3);
-
-static ssize_t show_tolerance3(struct device *dev,
-                              struct device_attribute *attr, char *buf)
-{
-       return sysfs_show_reg(dev, attr, buf,
-                             AD525X_I2C_EEPROM | AD525X_TOL_RDAC3);
-}
-
-static DEVICE_ATTR(tolerance3, S_IRUGO, show_tolerance3, NULL);
+DPOT_DEVICE_SHOW_SET(rdac3, AD525X_I2C_RDAC | AD525X_RDAC3);
+DPOT_DEVICE_SHOW_SET(eeprom3, AD525X_I2C_EEPROM | AD525X_RDAC3);
+DPOT_DEVICE_SHOW_ONLY(tolerance3, AD525X_I2C_EEPROM | AD525X_TOL_RDAC3);
 
 static struct attribute *ad525x_attributes_wipers[4][4] = {
        {
@@ -361,41 +231,19 @@ static const struct attribute_group ad525x_group_wipers[] = {
 
 /* ------------------------------------------------------------------------- */
 
-static ssize_t set_inc_all(struct device *dev,
-                          struct device_attribute *attr,
-                          const char *buf, size_t count)
-{
-       return sysfs_do_cmd(dev, attr, buf, count, AD525X_INC_ALL);
-}
-
-static DEVICE_ATTR(inc_all, S_IWUSR, NULL, set_inc_all);
-
-static ssize_t set_dec_all(struct device *dev,
-                          struct device_attribute *attr,
-                          const char *buf, size_t count)
-{
-       return sysfs_do_cmd(dev, attr, buf, count, AD525X_DEC_ALL);
-}
-
-static DEVICE_ATTR(dec_all, S_IWUSR, NULL, set_dec_all);
-
-static ssize_t set_inc_all_6db(struct device *dev,
-                              struct device_attribute *attr,
-                              const char *buf, size_t count)
-{
-       return sysfs_do_cmd(dev, attr, buf, count, AD525X_INC_ALL_6DB);
-}
-
-static DEVICE_ATTR(inc_all_6db, S_IWUSR, NULL, set_inc_all_6db);
-
-static ssize_t set_dec_all_6db(struct device *dev,
-                              struct device_attribute *attr,
-                              const char *buf, size_t count)
-{
-       return sysfs_do_cmd(dev, attr, buf, count, AD525X_DEC_ALL_6DB);
-}
-
-static DEVICE_ATTR(dec_all_6db, S_IWUSR, NULL, set_dec_all_6db);
+#define DPOT_DEVICE_DO_CMD(_name, _cmd) static ssize_t \
+set_##_name(struct device *dev, \
+                        struct device_attribute *attr, \
+                        const char *buf, size_t count) \
+{ \
+       return sysfs_do_cmd(dev, attr, buf, count, _cmd); \
+} \
+static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, NULL, set_##_name);
+
+DPOT_DEVICE_DO_CMD(inc_all, AD525X_INC_ALL);
+DPOT_DEVICE_DO_CMD(dec_all, AD525X_DEC_ALL);
+DPOT_DEVICE_DO_CMD(inc_all_6db, AD525X_INC_ALL_6DB);
+DPOT_DEVICE_DO_CMD(dec_all_6db, AD525X_DEC_ALL_6DB);
 
 static struct attribute *ad525x_attributes_commands[] = {
        &dev_attr_inc_all.attr,