hwmon/pc87360 separate alarm files: add temp-min/max/crit/fault-alarms

Adds temp-min/max/crit/fault-alarm callbacks, sensor-device-attribute
declarations, and refs to those new decls in the macro used to initialize
the temp_group (of sysfs files)

[akpm@linux-foundation.org: cleanups]
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 80 insertions, 4 deletions

diff --git a/drivers/hwmon/pc87360.c b/drivers/hwmon/pc87360.c
index 3a7d7fa64ebc..c80ee5f056ba 100644
--- a/drivers/hwmon/pc87360.c
+++ b/drivers/hwmon/pc87360.c
@@ -845,12 +845,76 @@ static ssize_t show_temp_alarms(struct device *dev, struct device_attribute *att
 }
 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
 
+/* show_temp_min/max_alarm() reads data from the per-channel status
+   register (sec 12.3.7), not the temp event status registers (sec
+   12.3.2) that show_temp_alarm() reads (via data->temp_alarms) */
+
+static ssize_t show_temp_min_alarm(struct device *dev,
+                        struct device_attribute *devattr, char *buf)
+{
+        struct pc87360_data *data = pc87360_update_device(dev);
+        unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MIN));
+}
+static ssize_t show_temp_max_alarm(struct device *dev,
+                        struct device_attribute *devattr, char *buf)
+{
+        struct pc87360_data *data = pc87360_update_device(dev);
+        unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MAX));
+}
+static ssize_t show_temp_crit_alarm(struct device *dev,
+                        struct device_attribute *devattr, char *buf)
+{
+        struct pc87360_data *data = pc87360_update_device(dev);
+        unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_ALM_CRIT));
+}
+
+static struct sensor_device_attribute temp_min_alarm[] = {
+        SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 0),
+        SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 1),
+        SENSOR_ATTR(temp3_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 2),
+};
+static struct sensor_device_attribute temp_max_alarm[] = {
+        SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 0),
+        SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 1),
+        SENSOR_ATTR(temp3_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 2),
+};
+static struct sensor_device_attribute temp_crit_alarm[] = {
+        SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 0),
+        SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 1),
+        SENSOR_ATTR(temp3_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 2),
+};
+
+#define TEMP_FAULT      0x40    /* open diode */
+static ssize_t show_temp_fault(struct device *dev,
+                        struct device_attribute *devattr, char *buf)
+{
+        struct pc87360_data *data = pc87360_update_device(dev);
+        unsigned nr = to_sensor_dev_attr(devattr)->index;
+
+        return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_FAULT));
+}
+static struct sensor_device_attribute temp_fault[] = {
+        SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
+        SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
+        SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2),
+};
+
 #define TEMP_UNIT_ATTRS(X) \
         &temp_input[X].dev_attr.attr,   \
         &temp_status[X].dev_attr.attr,  \
         &temp_min[X].dev_attr.attr,     \
         &temp_max[X].dev_attr.attr,     \
-        &temp_crit[X].dev_attr.attr
+        &temp_crit[X].dev_attr.attr,    \
+        &temp_min_alarm[X].dev_attr.attr, \
+        &temp_max_alarm[X].dev_attr.attr, \
+        &temp_crit_alarm[X].dev_attr.attr, \
+        &temp_fault[X].dev_attr.attr
 
 static struct attribute * pc8736x_temp_attr_array[] = {
         TEMP_UNIT_ATTRS(0),
@@ -864,8 +928,8 @@ static const struct attribute_group pc8736x_temp_group = {
         .attrs = pc8736x_temp_attr_array,
 };
 
-static ssize_t show_name(struct device *dev, struct device_attribute
-                         *devattr, char *buf)
+static ssize_t show_name(struct device *dev,
+                        struct device_attribute *devattr, char *buf)
 {
         struct pc87360_data *data = dev_get_drvdata(dev);
         return sprintf(buf, "%s\n", data->name);
@@ -1086,7 +1150,15 @@ static int __devinit pc87360_probe(struct platform_device *pdev)
                             || (err = device_create_file(dev,
                                         &temp_crit[i].dev_attr))
                             || (err = device_create_file(dev,
-                                        &temp_status[i].dev_attr)))
+                                        &temp_status[i].dev_attr))
+                            || (err = device_create_file(dev,
+                                        &temp_min_alarm[i].dev_attr))
+                            || (err = device_create_file(dev,
+                                        &temp_max_alarm[i].dev_attr))
+                            || (err = device_create_file(dev,
+                                        &temp_crit_alarm[i].dev_attr))
+                            || (err = device_create_file(dev,
+                                        &temp_fault[i].dev_attr)))
                                 goto ERROR3;
                 }
                 if ((err = device_create_file(dev, &dev_attr_alarms_temp)))
@@ -1192,6 +1264,10 @@ static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
 #define CHAN_ALM_ENA    0x10    /* propagate to alarms-reg ?? (chk val!) */
 #define CHAN_READY      (CHAN_ENA|CHAN_CNVRTD) /* sample ready mask */
 
+#define TEMP_OTS_OE     0x20    /* OTS Output Enable */
+#define VIN_RW1C_MASK   (CHAN_READY|CHAN_ALM_MAX|CHAN_ALM_MIN)   /* 0x87 */
+#define TEMP_RW1C_MASK  (VIN_RW1C_MASK|TEMP_ALM_CRIT|TEMP_FAULT) /* 0xCF */
+
 static void pc87360_init_device(struct platform_device *pdev,
                                 int use_thermistors)
 {