diff options
Diffstat (limited to 'drivers/hwmon/lm63.c')
| -rw-r--r-- | drivers/hwmon/lm63.c | 55 |
1 files changed, 44 insertions, 11 deletions
diff --git a/drivers/hwmon/lm63.c b/drivers/hwmon/lm63.c index 24a96f89d20..a9e6212ed54 100644 --- a/drivers/hwmon/lm63.c +++ b/drivers/hwmon/lm63.c @@ -117,6 +117,9 @@ static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; (val) >= 127000 ? 127 : \ (val) < 0 ? ((val) - 500) / 1000 : \ ((val) + 500) / 1000) +#define TEMP8U_TO_REG(val) ((val) <= 0 ? 0 : \ + (val) >= 255000 ? 255 : \ + ((val) + 500) / 1000) #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) #define TEMP11_TO_REG(val) ((val) <= -128000 ? 0x8000 : \ (val) >= 127875 ? 0x7FE0 : \ @@ -313,22 +316,33 @@ static ssize_t show_remote_temp8(struct device *dev, + data->temp2_offset); } -static ssize_t set_local_temp8(struct device *dev, - struct device_attribute *dummy, - const char *buf, size_t count) +static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, + const char *buf, size_t count) { + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct i2c_client *client = to_i2c_client(dev); struct lm63_data *data = i2c_get_clientdata(client); + int nr = attr->index; + int reg = nr == 2 ? LM63_REG_REMOTE_TCRIT : LM63_REG_LOCAL_HIGH; long val; int err; + int temp; err = kstrtol(buf, 10, &val); if (err) return err; mutex_lock(&data->update_lock); - data->temp8[1] = TEMP8_TO_REG(val); - i2c_smbus_write_byte_data(client, LM63_REG_LOCAL_HIGH, data->temp8[1]); + if (nr == 2) { + if (data->remote_unsigned) + temp = TEMP8U_TO_REG(val - data->temp2_offset); + else + temp = TEMP8_TO_REG(val - data->temp2_offset); + } else { + temp = TEMP8_TO_REG(val); + } + data->temp8[nr] = temp; + i2c_smbus_write_byte_data(client, reg, temp); mutex_unlock(&data->update_lock); return count; } @@ -461,7 +475,7 @@ static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL); static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0); static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8, - set_local_temp8, 1); + set_temp8, 1); static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, @@ -470,12 +484,8 @@ static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, set_temp11, 2); static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11, set_temp11, 3); -/* - * On LM63, temp2_crit can be set only once, which should be job - * of the bootloader. - */ static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8, - NULL, 2); + set_temp8, 2); static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst, set_temp2_crit_hyst); @@ -510,7 +520,30 @@ static struct attribute *lm63_attributes[] = { NULL }; +/* + * On LM63, temp2_crit can be set only once, which should be job + * of the bootloader. + * On LM64, temp2_crit can always be set. + * On LM96163, temp2_crit can be set if bit 1 of the configuration + * register is true. + */ +static umode_t lm63_attribute_mode(struct kobject *kobj, + struct attribute *attr, int index) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct i2c_client *client = to_i2c_client(dev); + struct lm63_data *data = i2c_get_clientdata(client); + + if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr + && (data->kind == lm64 || + (data->kind == lm96163 && (data->config & 0x02)))) + return attr->mode | S_IWUSR; + + return attr->mode; +} + static const struct attribute_group lm63_group = { + .is_visible = lm63_attribute_mode, .attrs = lm63_attributes, }; |