linux-kernel - Re: [PATCH] hwmon:(adm1275) Enable adm1278 ADM1278_TEMP1

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Message-ID: <76D2694A-C80C-49F8-B51D-8A74341CA4ED@fb.com>
Date:   Thu, 28 May 2020 17:34:22 +0000
From:   Vijay Khemka <vijaykhemka@...com>
To:     Manikandan Elumalai <manikandan.hcl.ers.epl@...il.com>,
        "linux-aspeed@...ts.ozlabs.org" <linux-aspeed@...ts.ozlabs.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "openbmc@...ts.ozlabs.org" <openbmc@...ts.ozlabs.org>
CC:     Sai Dasari <sdasari@...com>, Patrick Williams <patrickw3@...com>,
        "manikandan.e@....com" <manikandan.e@....com>
Subject: Re: [PATCH] hwmon:(adm1275) Enable adm1278 ADM1278_TEMP1_EN



On 5/28/20, 7:15 AM, "Manikandan Elumalai" <manikandan.hcl.ers.epl@...il.com> wrote:

    
    The adm1278 temperature sysfs attribute need it for one of the our openbmc platform . 
    This functionality is not enabled by default, so PMON_CONFIG needs to be modified in order to enable it.

There is no Signed-off-by.
    
    ---
     drivers/hwmon/pmbus/adm1275.c | 15 +++++++++++++++
     1 file changed, 15 insertions(+)
    
    diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c
    index 5caa37fb..47b293d 100644
    --- a/drivers/hwmon/pmbus/adm1275.c
    +++ b/drivers/hwmon/pmbus/adm1275.c
    @@ -681,6 +681,21 @@ static int adm1275_probe(struct i2c_client *client,
     			}
     		}
     
    +		config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG);
    +		if (config < 0)
    +			return config;
    +
    +		/* Enable TEMP1 by defult */
    +		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;
    +		}
    +
     		if (config & ADM1278_TEMP1_EN)

This check becomes irrelevant as you are enabling it above then rather than
enabling it just remove this check.

     			info->func[0] |=
     				PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
    -- 
    2.7.4