linux-kernel - Re: [PATCH 14/15] hwmon: (scmi-hwmon) Match scmi device by both name and protocol id

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Date:   Tue, 10 Dec 2019 10:06:43 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Cristian Marussi <cristian.marussi@....com>,
        Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org
Subject: Re: [PATCH 14/15] hwmon: (scmi-hwmon) Match scmi device by both name
 and protocol id

On Tue, Dec 10, 2019 at 02:53:44PM +0000, Sudeep Holla wrote:
> The scmi bus now has support to match the driver with devices not only
> based on their protocol id but also based on their device name if one is
> available. This was added to cater the need to support multiple devices
> and drivers for the same protocol.
> 
> Let us add the name "hwmon" to scmi_device_id table in the driver so
> that in matches only with device with the same name and protocol id
> SCMI_PROTOCOL_SENSOR. This will help to add IIO support in parallel if
> needed.

If you are planning to re-implement the driver as iio driver, it would
make more sense to drop the hwmon driver entirely and use the iio->hwmon
bridge to access the sensors as hwmon devices if needed.

Guenter

> 
> Cc: Jean Delvare <jdelvare@...e.com>
> Cc: Guenter Roeck <linux@...ck-us.net>
> Cc: linux-hwmon@...r.kernel.org
> Signed-off-by: Sudeep Holla <sudeep.holla@....com>
> ---
>  drivers/hwmon/scmi-hwmon.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/hwmon/scmi-hwmon.c b/drivers/hwmon/scmi-hwmon.c
> index 8a7732c0bef3..286d3cfda7de 100644
> --- a/drivers/hwmon/scmi-hwmon.c
> +++ b/drivers/hwmon/scmi-hwmon.c
> @@ -259,7 +259,7 @@ static int scmi_hwmon_probe(struct scmi_device *sdev)
>  }
> 
>  static const struct scmi_device_id scmi_id_table[] = {
> -	{ SCMI_PROTOCOL_SENSOR },
> +	{ SCMI_PROTOCOL_SENSOR, "hwmon" },
>  	{ },
>  };
>  MODULE_DEVICE_TABLE(scmi, scmi_id_table);
> --
> 2.17.1
>