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hwmon: (lm75) Move updating the sample interval to its own function

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We'll need per-chip handling for updating the sample interval.
To prepare for it, separate the code implementing it into its own
function.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2019-08-08 14:30:23 -07:00
parent 7db0db3f6c
commit 040b106ff8
1 changed files with 19 additions and 14 deletions
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33
drivers/hwmon/lm75.c
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@ -388,27 +388,32 @@ static int lm75_write_temp(struct device *dev, u32 attr, long temp)
return regmap_write(data->regmap, reg, (u16)temp);
}
static int lm75_write_chip(struct device *dev, u32 attr, long val)
static int lm75_update_interval(struct device *dev, long val)
{
struct lm75_data *data = dev_get_drvdata(dev);
u8 index;
s32 err;
index = find_closest(val, data->params->sample_times,
(int)data->params->num_sample_times);
err = lm75_write_config(data, lm75_sample_set_masks[index],
LM75_SAMPLE_CLEAR_MASK);
if (err)
return err;
data->sample_time = data->params->sample_times[index];
if (data->params->resolutions)
data->resolution = data->params->resolutions[index];
return 0;
}
static int lm75_write_chip(struct device *dev, u32 attr, long val)
{
switch (attr) {
case hwmon_chip_update_interval:
index = find_closest(val, data->params->sample_times,
(int)data->params->num_sample_times);
err = lm75_write_config(data,
lm75_sample_set_masks[index],
LM75_SAMPLE_CLEAR_MASK);
if (err)
return err;
data->sample_time = data->params->sample_times[index];
if (data->params->resolutions)
data->resolution = data->params->resolutions[index];
break;
return lm75_update_interval(dev, val);
default:
return -EINVAL;
}