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hwmon: (tmp421) introduce a channel struct

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This is a preparatory change. Upcoming patches will introduce more
per-channel parameters so it's worth organizing them into a struct.

Signed-off-by: Krzysztof Adamski <krzysztof.adamski@nokia.com>
Link: https://lore.kernel.org/r/baf34d95983a6b58a3e39e4c098e5979e541572e.1634029538.git.krzysztof.adamski@nokia.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Krzysztof Adamski 2021-10-12 11:26:55 +02:00 committed by Guenter Roeck
parent beee7890c3
commit 5e3dbeac37
1 changed files with 9 additions and 5 deletions
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14
drivers/hwmon/tmp421.c
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@ -87,6 +87,10 @@ static const struct of_device_id __maybe_unused tmp421_of_match[] = {
};
MODULE_DEVICE_TABLE(of, tmp421_of_match);
struct tmp421_channel {
s16 temp;
};
struct tmp421_data {
struct i2c_client *client;
struct mutex update_lock;
@ -98,7 +102,7 @@ struct tmp421_data {
unsigned long last_updated;
unsigned long channels;
u8 config;
s16 temp[MAX_CHANNELS];
struct tmp421_channel channel[MAX_CHANNELS];
};
static int temp_from_raw(u16 reg, bool extended)
@ -133,12 +137,12 @@ static int tmp421_update_device(struct tmp421_data *data)
ret = i2c_smbus_read_byte_data(client, TMP421_TEMP_MSB[i]);
if (ret < 0)
goto exit;
data->temp[i] = ret << 8;
data->channel[i].temp = ret << 8;
ret = i2c_smbus_read_byte_data(client, TMP421_TEMP_LSB[i]);
if (ret < 0)
goto exit;
data->temp[i] |= ret;
data->channel[i].temp |= ret;
}
data->last_updated = jiffies;
data->valid = true;
@ -167,7 +171,7 @@ static int tmp421_read(struct device *dev, enum hwmon_sensor_types type,
switch (attr) {
case hwmon_temp_input:
*val = temp_from_raw(tmp421->temp[channel],
*val = temp_from_raw(tmp421->channel[channel].temp,
tmp421->config & TMP421_CONFIG_RANGE);
return 0;
case hwmon_temp_fault:
@ -175,7 +179,7 @@ static int tmp421_read(struct device *dev, enum hwmon_sensor_types type,
* Any of OPEN or /PVLD bits indicate a hardware mulfunction
* and the conversion result may be incorrect
*/
*val = !!(tmp421->temp[channel] & 0x03);
*val = !!(tmp421->channel[channel].temp & 0x03);
return 0;
default:
return -EOPNOTSUPP;