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hwmon: (lm90) enable extended range according to DTS node

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Some lm90 compatible devices can operate in an extended temperature mode.
This feature is now enabled if the property is set in the corresponding
device tree node.

Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220517135614.8185-2-holger.brunck@hitachienergy.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Holger Brunck 2022-05-17 15:56:14 +02:00 committed by Guenter Roeck
parent 8dd248fa00
commit 45988d9078
1 changed files with 4 additions and 0 deletions
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4
drivers/hwmon/lm90.c
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@ -1707,6 +1707,7 @@ static void lm90_restore_conf(void *_data)
static int lm90_init_client(struct i2c_client *client, struct lm90_data *data)
{
struct device_node *np = client->dev.of_node;
int config, convrate;
convrate = lm90_read_reg(client, LM90_REG_R_CONVRATE);
@ -1727,6 +1728,9 @@ static int lm90_init_client(struct i2c_client *client, struct lm90_data *data)
/* Check Temperature Range Select */
if (data->flags & LM90_HAVE_EXTENDED_TEMP) {
if (of_property_read_bool(np, "ti,extended-range-enable"))
config |= 0x04;
if (config & 0x04)
data->flags |= LM90_FLAG_ADT7461_EXT;
}