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| author | Alan Cox <alan@linux.intel.com> | 2010-08-14 21:08:49 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@linux-fr.org> | 2010-08-14 21:08:49 +0200 |
| commit | 960f12f4d1eb5ba3c76dc6b57a909a65dd59e1c2 (patch) | |
| tree | e0871d3e14bc6a1b6981f13aa4a689da142373a0 /drivers/hwmon/emc1403.c | |
| parent | 5950ec8d3e47a08ec0b678a0e0ba5d1b9b62dd8e (diff) | |
| download | kernel_samsung_crespo-960f12f4d1eb5ba3c76dc6b57a909a65dd59e1c2.zip kernel_samsung_crespo-960f12f4d1eb5ba3c76dc6b57a909a65dd59e1c2.tar.gz kernel_samsung_crespo-960f12f4d1eb5ba3c76dc6b57a909a65dd59e1c2.tar.bz2 | |
hwmon: (emc1403) Add power support
Add back the power interface we lost due to a slight misunderstanding of
the maintainers wishes.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon/emc1403.c')
| -rw-r--r-- | drivers/hwmon/emc1403.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c index 0e4b564..5b58b20 100644 --- a/drivers/hwmon/emc1403.c +++ b/drivers/hwmon/emc1403.c @@ -89,6 +89,35 @@ static ssize_t store_temp(struct device *dev, return count; } +static ssize_t store_bit(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct thermal_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute_2 *sda = to_sensor_dev_attr_2(attr); + unsigned long val; + int retval; + + if (strict_strtoul(buf, 10, &val)) + return -EINVAL; + + mutex_lock(&data->mutex); + retval = i2c_smbus_read_byte_data(client, sda->nr); + if (retval < 0) + goto fail; + + retval &= ~sda->index; + if (val) + retval |= sda->index; + + retval = i2c_smbus_write_byte_data(client, sda->index, retval); + if (retval == 0) + retval = count; +fail: + mutex_unlock(&data->mutex); + return retval; +} + static ssize_t show_hyst(struct device *dev, struct device_attribute *attr, char *buf) { @@ -200,6 +229,9 @@ static SENSOR_DEVICE_ATTR_2(temp3_crit_alarm, S_IRUGO, static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_hyst, store_hyst, 0x1A); +static SENSOR_DEVICE_ATTR_2(power_state, S_IRUGO | S_IWUSR, + show_bit, store_bit, 0x03, 0x40); + static struct attribute *mid_att_thermal[] = { &sensor_dev_attr_temp1_min.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, @@ -225,6 +257,7 @@ static struct attribute *mid_att_thermal[] = { &sensor_dev_attr_temp3_max_alarm.dev_attr.attr, &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr, &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, + &sensor_dev_attr_power_state.dev_attr.attr, NULL }; |