On Fri, Oct 14, 2016 at 11:43:35AM +0200, Michael Walle wrote:
> This patch adds support for the min, max and alarm attributes of the
> voltage and temperature channels. Additionally, the temp2_fault attribute
> is supported which indicates a fault of the external temperature diode.
>
> Signed-off-by: Michael Walle <michael@xxxxxxxx>
> ---
> drivers/hwmon/adt7411.c | 306 ++++++++++++++++++++++++++++++++++++++++++------
> 1 file changed, 271 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/hwmon/adt7411.c b/drivers/hwmon/adt7411.c
> index 2f44cdc..c6351b8 100644
> --- a/drivers/hwmon/adt7411.c
> +++ b/drivers/hwmon/adt7411.c
[ ... ]
>
> +static int adt7411_write_in(struct device *dev, u32 attr, int channel,
> + long val)
> +{
> + struct adt7411_data *data = dev_get_drvdata(dev);
> + struct i2c_client *client = data->client;
> + int ret, reg;
> +
> + mutex_lock(&data->update_lock);
> + ret = adt7411_update_vref(dev);
> + if (ret < 0)
> + goto exit_unlock;
> + val = DIV_ROUND_CLOSEST(val * 256, data->vref_cached);
> + val = clamp_val(val, 0, 255);
> +
> + switch (attr) {
> + case hwmon_in_min:
> + reg = ADT7411_REG_IN_LOW(channel);
> + break;
> + case hwmon_in_max:
> + reg = ADT7411_REG_IN_HIGH(channel);
> + break;
This is also used to set the vdd limits, but it does not write into the vdd
limit registers. ADT7411_REG_IN_HIGH(0) == ADT7411_REG_IN_HIGH(1) == 0x27,
but it should be 0x23. Same for the low limit register.
Guenter
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