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SubjectRe: [PATCH v2] hwmon:(adm1275) Enable adm1278 ADM1278_TEMP1_EN
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On 5/29/20 10:57 AM, Vijay Khemka wrote:
>
>
> On 5/29/20, 5:47 AM, "Manikandan Elumalai" <manikandan.hcl.ers.epl@gmail.com> wrote:
>
> The adm1278 temperature sysfs attribute need it for one of the openbmc platform .
> This functionality is not enabled by default, so PMON_CONFIG needs to be modified in order to enable it.
>
> Signed-off-by : Manikandan Elumalai <manikandan.hcl.ers.epl@gmail.com>
>
> v2:
> - Add Signed-off-by.
> - Removed ADM1278_TEMP1_EN check.
> ---
> drivers/hwmon/pmbus/adm1275.c | 21 +++++++++++++++++----
> 1 file changed, 17 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c
> index 5caa37fb..ab5fceb 100644
> --- a/drivers/hwmon/pmbus/adm1275.c
> +++ b/drivers/hwmon/pmbus/adm1275.c
> @@ -666,7 +666,23 @@ static int adm1275_probe(struct i2c_client *client,
> tindex = 3;
>
> info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
> - PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
> + PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
> + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
> +
> + config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG);
> + if (config < 0)
> + return config;
> +
> + /* Enable TEMP1 by default */
> + config |= ADM1278_TEMP1_EN;
> + ret = i2c_smbus_write_byte_data(client,
> + ADM1275_PMON_CONFIG,
> + config);
> + if (ret < 0) {
> + dev_err(&client->dev,
> + "Failed to enable temperature config\n");
> + return -ENODEV;
> + }
> You don't need this above code removing check as below should be enough to
> populate sysfs entry you need.
>

You mean you are only interested in having the attribute, even if it doesn't
report anything useful because monitoring is disabled in the chip ?
Sorry, I don't understand. Can you elaborate ?

Thanks,
Guenter

> /* Enable VOUT if not enabled (it is disabled by default) */
> if (!(config & ADM1278_VOUT_EN)) {
> @@ -681,9 +697,6 @@ static int adm1275_probe(struct i2c_client *client,
> }
> }
>
> - if (config & ADM1278_TEMP1_EN)
> - info->func[0] |=
> - PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
> if (config & ADM1278_VIN_EN)
> info->func[0] |= PMBUS_HAVE_VIN;
> break;
> --
> 2.7.4
>
>
>

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