linux-kernel - Re: [PATCH net-next v2 3/3] net: phy: bcm54140: add hwmon support

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Date:   Sun, 19 Apr 2020 17:56:55 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Michael Walle <michael@...le.cc>
Cc:     linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>
Subject: Re: [PATCH net-next v2 3/3] net: phy: bcm54140: add hwmon support

On Sun, Apr 19, 2020 at 12:12:49PM +0200, Michael Walle wrote:

Hi Michael

You have an #if here...

> +#if IS_ENABLED(CONFIG_HWMON)
> +static umode_t bcm54140_hwmon_is_visible(const void *data,
> +					 enum hwmon_sensor_types type,
> +					 u32 attr, int channel)
> +{
> +	switch (type) {
> +	case hwmon_in:
> +		switch (attr) {
> +		case hwmon_in_min:
> +		case hwmon_in_max:
> +			return 0644;
> +		case hwmon_in_label:
> +		case hwmon_in_input:
> +		case hwmon_in_alarm:
> +			return 0444;
> +		default:
> +			return 0;
> +		}
> +	case hwmon_temp:
> +		switch (attr) {
> +		case hwmon_temp_min:
> +		case hwmon_temp_max:
> +			return 0644;
> +		case hwmon_temp_input:
> +		case hwmon_temp_alarm:
> +			return 0444;
> +		default:
> +			return 0;
> +		}
> +	default:
> +		return 0;
> +	}
> +}

...


> +static const struct hwmon_chip_info bcm54140_chip_info = {
> +	.ops = &bcm54140_hwmon_ops,
> +	.info = bcm54140_hwmon_info,
>  };
>  
>  static int bcm54140_phy_base_read_rdb(struct phy_device *phydev, u16 rdb)
> @@ -203,6 +522,72 @@ static int bcm54140_get_base_addr_and_port(struct phy_device *phydev)
>  	return 0;
>  }


Still inside the #if. Some original code is now inside the #if/#endif.
Is this correct? Hard to see from just the patch.

>  
> +/* Check if one PHY has already done the init of the parts common to all PHYs
> + * in the Quad PHY package.
> + */
> +static bool bcm54140_is_pkg_init(struct phy_device *phydev)
> +{
> +	struct bcm54140_phy_priv *priv = phydev->priv;
> +	struct mii_bus *bus = phydev->mdio.bus;
> +	int base_addr = priv->base_addr;
> +	struct phy_device *phy;
> +	int i;
> +

...

> +static int bcm54140_phy_probe_once(struct phy_device *phydev)
> +{
> +	struct device *hwmon;
> +	int ret;
> +
> +	/* enable hardware monitoring */
> +	ret = bcm54140_enable_monitoring(phydev);
> +	if (ret)
> +		return ret;
> +
> +	hwmon = devm_hwmon_device_register_with_info(&phydev->mdio.dev,
> +						     "BCM54140", phydev,
> +						     &bcm54140_chip_info,
> +						     NULL);
> +	return PTR_ERR_OR_ZERO(hwmon);
> +}
> +#endif


Thanks
  Andrew