linux-kernel - Re: [PATCH v3 05/12] phy: add the Berlin USB PHY driver

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Message-ID: <20140716092541.GC28151@kwain>
Date:	Wed, 16 Jul 2014 11:25:41 +0200
From:	Antoine Ténart 
	<antoine.tenart@...e-electrons.com>
To:	Varka Bhadram <varkabhadram@...il.com>
Cc:	Antoine Ténart 
	<antoine.tenart@...e-electrons.com>,
	sebastian.hesselbarth@...il.com, Peter.Chen@...escale.com,
	balbi@...com, p.zabel@...gutronix.de,
	alexandre.belloni@...e-electrons.com,
	thomas.petazzoni@...e-electrons.com, zmxu@...vell.com,
	jszhang@...vell.com, linux-arm-kernel@...ts.infradead.org,
	linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 05/12] phy: add the Berlin USB PHY driver

Hi Varka,

On Wed, Jul 16, 2014 at 02:49:05PM +0530, Varka Bhadram wrote:
> On 07/16/2014 01:55 PM, Antoine Ténart wrote:
> >+static const struct of_device_id phy_berlin_sata_of_match[] = {
> >+	{
> >+		.compatible = "marvell,berlin2-usb-phy",
> >+		.data = &phy_berlin_pll_dividers[0],
> >+	},
> >+	{
> >+		.compatible = "marvell,berlin2cd-usb-phy",
> >+		.data = &phy_berlin_pll_dividers[1],
> >+	},
> >+	{ },
> >+};
> >+MODULE_DEVICE_TABLE(of, phy_berlin_sata_of_match);
> >+
> 
> It looks good if we move this after probe().. So that we can see of_match_table directly...

We use the of match table in the probe, when calling of_match_device().

> >+static int phy_berlin_usb_probe(struct platform_device *pdev)
> >+{
> >+	const struct of_device_id *match =
> >+		of_match_device(phy_berlin_sata_of_match, &pdev->dev);

Here.

Antoine

> >+	struct phy_berlin_usb_priv *priv;
> >+	struct resource *res;
> >+	struct phy_provider *phy_provider;
> >+
> >+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
> >+	if (!priv)
> >+		return -ENOMEM;
> >+
> >+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> >+	priv->base = devm_ioremap_resource(&pdev->dev, res);
> >+	if (IS_ERR(priv->base))
> >+		return PTR_ERR(priv->base);
> >+
> >+	priv->rst_ctrl = devm_reset_control_get(&pdev->dev, NULL);
> >+	if (IS_ERR(priv->rst_ctrl))
> >+		return PTR_ERR(priv->rst_ctrl);
> >+
> >+	priv->pll_divider = *((u32 *)match->data);
> >+
> >+	priv->phy = devm_phy_create(&pdev->dev, &phy_berlin_usb_ops, NULL);
> >+	if (IS_ERR(priv->phy)) {
> >+		dev_err(&pdev->dev, "failed to create PHY\n");
> >+		return PTR_ERR(priv->phy);
> >+	}
> >+
> >+	platform_set_drvdata(pdev, priv);
> >+
> >+	phy_provider =
> >+		devm_of_phy_provider_register(&pdev->dev, of_phy_simple_xlate);
> >+	if (IS_ERR(phy_provider))
> >+		return PTR_ERR(phy_provider);
> >+
> >+	return 0;
> >+}

-- 
Antoine Ténart, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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