Re: [PATCH v3 2/2] phy: socionext: Add UniPhier AHCI PHY driver support

[Kunihiko Hayashi]

Hi Vinod,

On 2020/07/16 15:37, Vinod Koul wrote:
> On 16-07-20, 11:43, Kunihiko Hayashi wrote:
>
> > +static int uniphier_ahciphy_pxs3_init(struct uniphier_ahciphy_priv *priv)
> > +{
> > +	int i;
> > +	u32 val;
> > +
> > +	/* setup port parameter */
> > +	val = readl(priv->base + TXCTRL0);
> > +	val &= ~TXCTRL0_AMP_G3_MASK;
> > +	val |= FIELD_PREP(TXCTRL0_AMP_G3_MASK, 0x73);
> > +	val &= ~TXCTRL0_AMP_G2_MASK;
> > +	val |= FIELD_PREP(TXCTRL0_AMP_G2_MASK, 0x46);
> > +	val &= ~TXCTRL0_AMP_G1_MASK;
> > +	val |= FIELD_PREP(TXCTRL0_AMP_G1_MASK, 0x42);
> > +	writel(val, priv->base + TXCTRL0);
> > +
> > +	val = readl(priv->base + TXCTRL1);
> > +	val &= ~TXCTRL1_DEEMPH_G3_MASK;
> > +	val |= FIELD_PREP(TXCTRL1_DEEMPH_G3_MASK, 0x23);
> > +	val &= ~TXCTRL1_DEEMPH_G2_MASK;
> > +	val |= FIELD_PREP(TXCTRL1_DEEMPH_G2_MASK, 0x05);
> > +	val &= ~TXCTRL1_DEEMPH_G1_MASK;
> > +	val |= FIELD_PREP(TXCTRL1_DEEMPH_G1_MASK, 0x05);
> > +
> > +	val = readl(priv->base + RXCTRL);
> > +	val &= ~RXCTRL_LOS_LVL_MASK;
> > +	val |= FIELD_PREP(RXCTRL_LOS_LVL_MASK, 0x9);
> > +	val &= ~RXCTRL_LOS_BIAS_MASK;
> > +	val |= FIELD_PREP(RXCTRL_LOS_BIAS_MASK, 0x2);
> > +	val &= ~RXCTRL_RX_EQ_MASK;
> > +	val |= FIELD_PREP(RXCTRL_RX_EQ_MASK, 0x1);
> > +
> > +	/* dummy read 25 times to make a wait time for the phy to stablize */
>
> s/stablize/stabilize

Need more spell checking. I'll fix it.

> > +static int uniphier_ahciphy_power_off(struct phy *phy)
> > +{
> > +	struct uniphier_ahciphy_priv *priv = phy_get_drvdata(phy);
> > +	int ret = 0;
> > +
> > +	if (priv->data->power_off)
> > +		ret = priv->data->power_off(priv);
> > +
> > +	reset_control_assert(priv->rst);
> > +	clk_disable_unprepare(priv->clk);
> > +
> > +	return ret;
> > +}
> > +
> > +
>
> multiple blank lines

I'll remove it.

> > +static const struct phy_ops uniphier_ahciphy_ops = {
> > +	.init  = uniphier_ahciphy_init,
> > +	.exit  = uniphier_ahciphy_exit,
> > +	.power_on  = uniphier_ahciphy_power_on,
> > +	.power_off = uniphier_ahciphy_power_off,
> > +	.owner = THIS_MODULE,
> > +};
> > +
> > +static int uniphier_ahciphy_probe(struct platform_device *pdev)
> > +{
> > +	struct device *dev = &pdev->dev;
> > +	struct uniphier_ahciphy_priv *priv;
> > +	struct phy *phy;
> > +	struct phy_provider *phy_provider;
> > +
> > +	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> > +	if (!priv)
> > +		return -ENOMEM;
> > +
> > +	priv->dev = dev;
> > +	priv->data = of_device_get_match_data(dev);
> > +	if (WARN_ON(!priv->data))
> > +		return -EINVAL;
> > +
> > +	priv->base = devm_platform_ioremap_resource(pdev, 0);
> > +	if (IS_ERR(priv->base))
> > +		return PTR_ERR(priv->base);
> > +
> > +	priv->clk_parent = devm_clk_get(dev, "link");
> > +	if (IS_ERR(priv->clk_parent))
> > +		return PTR_ERR(priv->clk_parent);
> > +
> > +	if (priv->data->is_phy_clk) {
> > +		priv->clk = devm_clk_get(dev, "phy");
> > +		if (IS_ERR(priv->clk))
> > +			return PTR_ERR(priv->clk);
> > +	}
> > +
> > +	priv->rst_parent = devm_reset_control_get_shared(dev, "link");
> > +	if (IS_ERR(priv->rst_parent))
> > +		return PTR_ERR(priv->rst_parent);
> > +
> > +	priv->rst = devm_reset_control_get_shared(dev, "phy");
> > +	if (IS_ERR(priv->rst))
> > +		return PTR_ERR(priv->rst);
> > +
> > +	phy = devm_phy_create(dev, dev->of_node, &uniphier_ahciphy_ops);
> > +	if (IS_ERR(phy)) {
> > +		dev_err(dev, "failed to create phy\n");
> > +		return PTR_ERR(phy);
> > +	}
> > +
> > +	phy_set_drvdata(phy, priv);
> > +	phy_provider = devm_of_phy_provider_register(dev,
> > +						     of_phy_simple_xlate);
>
> single line?

Ok, It can be merged into single line.

Thank you,
 
---
Best Regards
Kunihiko Hayashi