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Subject: Re: [PATCH net-next 2/6] net: dsa: mt7530: Extend device data ready
 for adding a new hardware
To:     Landen Chao <landen.chao@mediatek.com>, andrew@lunn.ch,
        vivien.didelot@savoirfairelinux.com, matthias.bgg@gmail.com,
        robh+dt@kernel.org, mark.rutland@arm.com
Cc:     devicetree@vger.kernel.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
        davem@davemloft.net, sean.wang@mediatek.com, opensource@vdorst.com,
        frank-w@public-files.de
References: <cover.1575914275.git.landen.chao@mediatek.com>
 <2d546d6bb15ff8b4b75af2220e20db4e634f4145.1575914275.git.landen.chao@mediatek.com>
From:   Florian Fainelli <f.fainelli@gmail.com>
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Message-ID: <d77e3109-e022-3581-2ca8-02889c5ddbf4@gmail.com>
Date:   Wed, 11 Dec 2019 19:45:51 -0800
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On 12/10/2019 12:14 AM, Landen Chao wrote:
> Add a structure holding required operations for each device such as device
> initialization, PHY port read or write, a checker whether PHY interface is
> supported on a certain port, MAC port setup for either bus pad or a
> specific PHY interface.
> 
> The patch is done for ready adding a new hardware MT7531.
> 
> Signed-off-by: Landen Chao <landen.chao@mediatek.com>
> Signed-off-by: Sean Wang <sean.wang@mediatek.com>
> ---
[snip]

> diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
> index ed1ec10ec62b..9a648d1f5d09 100644
> --- a/drivers/net/dsa/mt7530.c
> +++ b/drivers/net/dsa/mt7530.c
> @@ -425,7 +425,7 @@ mt7530_fdb_write(struct mt7530_priv *priv, u16 vid,
>  }
>  
>  static int
> -mt7530_pad_clk_setup(struct dsa_switch *ds, int mode)
> +mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t mode)

Here you pass a phy_interface_t argument but not in mt7632_pad_clk_setup().

> +static int
> +mt7530_pad_setup(struct dsa_switch *ds, const struct phylink_link_state *state)
> +{
> +	struct mt7530_priv *priv = ds->priv;
> +
> +	/* Setup TX circuit incluing relevant PAD and driving */
> +	mt7530_pad_clk_setup(ds, state->interface);
> +
> +	if (priv->id == ID_MT7530) {
> +		/* Setup RX circuit, relevant PAD and driving on the
> +		 * host which must be placed after the setup on the
> +		 * device side is all finished.
> +		 */
> +		mt7623_pad_clk_setup(ds);

Would not it make sense to pass it down here as well for consistency?

[snip]

> @@ -1660,8 +1768,19 @@ mt7530_probe(struct mdio_device *mdiodev)
>  	/* Get the hardware identifier from the devicetree node.
>  	 * We will need it for some of the clock and regulator setup.
>  	 */
> -	priv->id = (unsigned int)(unsigned long)
> -		of_device_get_match_data(&mdiodev->dev);
> +	priv->info = of_device_get_match_data(&mdiodev->dev);
> +	if (!priv->info)
> +		return -EINVAL;
> +
> +	/* Sanity check if these required device operstaions are filled
> +	 * properly.

Typo: operations.

Other than that, this looks okay to me.
-- 
Florian