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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-10-13 01:18:36 -0400 |
---|---|---|
committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-10-13 01:18:36 -0400 |
commit | 4783f393de3077211c14675a0e57c8a02e9190b0 (patch) | |
tree | 6c37d8664eb072fd026db3706481d771da4495ca /drivers/hwmon/adm1031.c | |
parent | 9f5f9ffe50e90ed73040d2100db8bfc341cee352 (diff) | |
parent | 5b8544c38e6fde6968645afd46ff681492192b86 (diff) |
Merge remote branch 'kumar/merge' into next
Diffstat (limited to 'drivers/hwmon/adm1031.c')
-rw-r--r-- | drivers/hwmon/adm1031.c | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/drivers/hwmon/adm1031.c b/drivers/hwmon/adm1031.c index 15c1a9616af3..0683e6be662c 100644 --- a/drivers/hwmon/adm1031.c +++ b/drivers/hwmon/adm1031.c | |||
@@ -79,7 +79,7 @@ struct adm1031_data { | |||
79 | int chip_type; | 79 | int chip_type; |
80 | char valid; /* !=0 if following fields are valid */ | 80 | char valid; /* !=0 if following fields are valid */ |
81 | unsigned long last_updated; /* In jiffies */ | 81 | unsigned long last_updated; /* In jiffies */ |
82 | unsigned int update_rate; /* In milliseconds */ | 82 | unsigned int update_interval; /* In milliseconds */ |
83 | /* The chan_select_table contains the possible configurations for | 83 | /* The chan_select_table contains the possible configurations for |
84 | * auto fan control. | 84 | * auto fan control. |
85 | */ | 85 | */ |
@@ -743,23 +743,23 @@ static SENSOR_DEVICE_ATTR(temp3_crit_alarm, S_IRUGO, show_alarm, NULL, 12); | |||
743 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 13); | 743 | static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 13); |
744 | static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 14); | 744 | static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 14); |
745 | 745 | ||
746 | /* Update Rate */ | 746 | /* Update Interval */ |
747 | static const unsigned int update_rates[] = { | 747 | static const unsigned int update_intervals[] = { |
748 | 16000, 8000, 4000, 2000, 1000, 500, 250, 125, | 748 | 16000, 8000, 4000, 2000, 1000, 500, 250, 125, |
749 | }; | 749 | }; |
750 | 750 | ||
751 | static ssize_t show_update_rate(struct device *dev, | 751 | static ssize_t show_update_interval(struct device *dev, |
752 | struct device_attribute *attr, char *buf) | 752 | struct device_attribute *attr, char *buf) |
753 | { | 753 | { |
754 | struct i2c_client *client = to_i2c_client(dev); | 754 | struct i2c_client *client = to_i2c_client(dev); |
755 | struct adm1031_data *data = i2c_get_clientdata(client); | 755 | struct adm1031_data *data = i2c_get_clientdata(client); |
756 | 756 | ||
757 | return sprintf(buf, "%u\n", data->update_rate); | 757 | return sprintf(buf, "%u\n", data->update_interval); |
758 | } | 758 | } |
759 | 759 | ||
760 | static ssize_t set_update_rate(struct device *dev, | 760 | static ssize_t set_update_interval(struct device *dev, |
761 | struct device_attribute *attr, | 761 | struct device_attribute *attr, |
762 | const char *buf, size_t count) | 762 | const char *buf, size_t count) |
763 | { | 763 | { |
764 | struct i2c_client *client = to_i2c_client(dev); | 764 | struct i2c_client *client = to_i2c_client(dev); |
765 | struct adm1031_data *data = i2c_get_clientdata(client); | 765 | struct adm1031_data *data = i2c_get_clientdata(client); |
@@ -771,12 +771,15 @@ static ssize_t set_update_rate(struct device *dev, | |||
771 | if (err) | 771 | if (err) |
772 | return err; | 772 | return err; |
773 | 773 | ||
774 | /* find the nearest update rate from the table */ | 774 | /* |
775 | for (i = 0; i < ARRAY_SIZE(update_rates) - 1; i++) { | 775 | * Find the nearest update interval from the table. |
776 | if (val >= update_rates[i]) | 776 | * Use it to determine the matching update rate. |
777 | */ | ||
778 | for (i = 0; i < ARRAY_SIZE(update_intervals) - 1; i++) { | ||
779 | if (val >= update_intervals[i]) | ||
777 | break; | 780 | break; |
778 | } | 781 | } |
779 | /* if not found, we point to the last entry (lowest update rate) */ | 782 | /* if not found, we point to the last entry (lowest update interval) */ |
780 | 783 | ||
781 | /* set the new update rate while preserving other settings */ | 784 | /* set the new update rate while preserving other settings */ |
782 | reg = adm1031_read_value(client, ADM1031_REG_FAN_FILTER); | 785 | reg = adm1031_read_value(client, ADM1031_REG_FAN_FILTER); |
@@ -785,14 +788,14 @@ static ssize_t set_update_rate(struct device *dev, | |||
785 | adm1031_write_value(client, ADM1031_REG_FAN_FILTER, reg); | 788 | adm1031_write_value(client, ADM1031_REG_FAN_FILTER, reg); |
786 | 789 | ||
787 | mutex_lock(&data->update_lock); | 790 | mutex_lock(&data->update_lock); |
788 | data->update_rate = update_rates[i]; | 791 | data->update_interval = update_intervals[i]; |
789 | mutex_unlock(&data->update_lock); | 792 | mutex_unlock(&data->update_lock); |
790 | 793 | ||
791 | return count; | 794 | return count; |
792 | } | 795 | } |
793 | 796 | ||
794 | static DEVICE_ATTR(update_rate, S_IRUGO | S_IWUSR, show_update_rate, | 797 | static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval, |
795 | set_update_rate); | 798 | set_update_interval); |
796 | 799 | ||
797 | static struct attribute *adm1031_attributes[] = { | 800 | static struct attribute *adm1031_attributes[] = { |
798 | &sensor_dev_attr_fan1_input.dev_attr.attr, | 801 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
@@ -830,7 +833,7 @@ static struct attribute *adm1031_attributes[] = { | |||
830 | 833 | ||
831 | &sensor_dev_attr_auto_fan1_min_pwm.dev_attr.attr, | 834 | &sensor_dev_attr_auto_fan1_min_pwm.dev_attr.attr, |
832 | 835 | ||
833 | &dev_attr_update_rate.attr, | 836 | &dev_attr_update_interval.attr, |
834 | &dev_attr_alarms.attr, | 837 | &dev_attr_alarms.attr, |
835 | 838 | ||
836 | NULL | 839 | NULL |
@@ -981,7 +984,8 @@ static void adm1031_init_client(struct i2c_client *client) | |||
981 | mask = ADM1031_UPDATE_RATE_MASK; | 984 | mask = ADM1031_UPDATE_RATE_MASK; |
982 | read_val = adm1031_read_value(client, ADM1031_REG_FAN_FILTER); | 985 | read_val = adm1031_read_value(client, ADM1031_REG_FAN_FILTER); |
983 | i = (read_val & mask) >> ADM1031_UPDATE_RATE_SHIFT; | 986 | i = (read_val & mask) >> ADM1031_UPDATE_RATE_SHIFT; |
984 | data->update_rate = update_rates[i]; | 987 | /* Save it as update interval */ |
988 | data->update_interval = update_intervals[i]; | ||
985 | } | 989 | } |
986 | 990 | ||
987 | static struct adm1031_data *adm1031_update_device(struct device *dev) | 991 | static struct adm1031_data *adm1031_update_device(struct device *dev) |
@@ -993,7 +997,8 @@ static struct adm1031_data *adm1031_update_device(struct device *dev) | |||
993 | 997 | ||
994 | mutex_lock(&data->update_lock); | 998 | mutex_lock(&data->update_lock); |
995 | 999 | ||
996 | next_update = data->last_updated + msecs_to_jiffies(data->update_rate); | 1000 | next_update = data->last_updated |
1001 | + msecs_to_jiffies(data->update_interval); | ||
997 | if (time_after(jiffies, next_update) || !data->valid) { | 1002 | if (time_after(jiffies, next_update) || !data->valid) { |
998 | 1003 | ||
999 | dev_dbg(&client->dev, "Starting adm1031 update\n"); | 1004 | dev_dbg(&client->dev, "Starting adm1031 update\n"); |