netdev - Re: [PATCH net-next v13 11/15] net: stmmac: dwmac-loongson: Add loongson_dwmac_dt

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Message-ID: <izezculld3evoafk2eot5xx3fwnfughgu37silhq3qv5orwi4w@iy75t6wl2tsr>
Date: Tue, 2 Jul 2024 12:46:07 +0300
From: Serge Semin <fancer.lancer@...il.com>
To: Yanteng Si <siyanteng@...ngson.cn>
Cc: andrew@...n.ch, hkallweit1@...il.com, peppe.cavallaro@...com, 
	alexandre.torgue@...s.st.com, joabreu@...opsys.com, Jose.Abreu@...opsys.com, 
	chenhuacai@...nel.org, linux@...linux.org.uk, guyinggang@...ngson.cn, 
	netdev@...r.kernel.org, chris.chenfeiyang@...il.com, si.yanteng@...ux.dev
Subject: Re: [PATCH net-next v13 11/15] net: stmmac: dwmac-loongson: Add
 loongson_dwmac_dt_config

On Wed, May 29, 2024 at 06:20:27PM +0800, Yanteng Si wrote:
> While at it move the np initialization procedure into a dedicated
> method. It will be useful in one of the subsequent commit adding the
> Loongson GNET device support.

As I just mentioned please merge in this patch content into the
previous patch:
[PATCH net-next v13 10/15] net: stmmac: dwmac-loongson: Add DT-less GMAC PCI-device support

-Serge(y)

> 
> Signed-off-by: Feiyang Chen <chenfeiyang@...ngson.cn>
> Signed-off-by: Yinggang Gu <guyinggang@...ngson.cn>
> Signed-off-by: Yanteng Si <siyanteng@...ngson.cn>
> ---
>  .../ethernet/stmicro/stmmac/dwmac-loongson.c  | 90 ++++++++++---------
>  1 file changed, 50 insertions(+), 40 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
> index 8bcf9d522781..fdd25ff33d02 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
> @@ -67,16 +67,60 @@ static struct stmmac_pci_info loongson_gmac_pci_info = {
>  	.setup = loongson_gmac_data,
>  };
>  
> +static int loongson_dwmac_dt_config(struct pci_dev *pdev,
> +				    struct plat_stmmacenet_data *plat,
> +				    struct stmmac_resources *res)
> +{
> +	struct device_node *np = dev_of_node(&pdev->dev);
> +	int ret;
> +
> +	plat->mdio_node = of_get_child_by_name(np, "mdio");
> +	if (plat->mdio_node) {
> +		dev_info(&pdev->dev, "Found MDIO subnode\n");
> +		plat->mdio_bus_data->needs_reset = true;
> +	}
> +
> +	ret = of_alias_get_id(np, "ethernet");
> +	if (ret >= 0)
> +		plat->bus_id = ret;
> +
> +	res->irq = of_irq_get_byname(np, "macirq");
> +	if (res->irq < 0) {
> +		dev_err(&pdev->dev, "IRQ macirq not found\n");
> +		return -ENODEV;
> +	}
> +
> +	res->wol_irq = of_irq_get_byname(np, "eth_wake_irq");
> +	if (res->wol_irq < 0) {
> +		dev_info(&pdev->dev,
> +			 "IRQ eth_wake_irq not found, using macirq\n");
> +		res->wol_irq = res->irq;
> +	}
> +
> +	res->lpi_irq = of_irq_get_byname(np, "eth_lpi");
> +	if (res->lpi_irq < 0) {
> +		dev_err(&pdev->dev, "IRQ eth_lpi not found\n");
> +		return -ENODEV;
> +	}
> +
> +	ret = device_get_phy_mode(&pdev->dev);
> +	if (ret < 0) {
> +		dev_err(&pdev->dev, "phy_mode not found\n");
> +		return -ENODEV;
> +	}
> +
> +	plat->phy_interface = ret;
> +
> +	return 0;
> +}
> +
>  static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>  {
>  	struct plat_stmmacenet_data *plat;
>  	struct stmmac_pci_info *info;
>  	struct stmmac_resources res;
> -	struct device_node *np;
>  	int ret, i;
>  
> -	np = dev_of_node(&pdev->dev);
> -
>  	plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
>  	if (!plat)
>  		return -ENOMEM;
> @@ -115,44 +159,10 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
>  
>  	pci_set_master(pdev);
>  
> -	if (np) {
> -		plat->mdio_node = of_get_child_by_name(np, "mdio");
> -		if (plat->mdio_node) {
> -			dev_info(&pdev->dev, "Found MDIO subnode\n");
> -			plat->mdio_bus_data->needs_reset = true;
> -		}
> -
> -		ret = of_alias_get_id(np, "ethernet");
> -		if (ret >= 0)
> -			plat->bus_id = ret;
> -
> -		ret = device_get_phy_mode(&pdev->dev);
> -		if (ret < 0) {
> -			dev_err(&pdev->dev, "phy_mode not found\n");
> +	if (dev_of_node(&pdev->dev)) {
> +		ret = loongson_dwmac_dt_config(pdev, plat, &res);
> +		if (ret)
>  			goto err_disable_device;
> -		}
> -
> -		plat->phy_interface = ret;
> -
> -		res.irq = of_irq_get_byname(np, "macirq");
> -		if (res.irq < 0) {
> -			dev_err(&pdev->dev, "IRQ macirq not found\n");
> -			ret = -ENODEV;
> -			goto err_disable_msi;
> -		}
> -
> -		res.wol_irq = of_irq_get_byname(np, "eth_wake_irq");
> -		if (res.wol_irq < 0) {
> -			dev_info(&pdev->dev, "IRQ eth_wake_irq not found, using macirq\n");
> -			res.wol_irq = res.irq;
> -		}
> -
> -		res.lpi_irq = of_irq_get_byname(np, "eth_lpi");
> -		if (res.lpi_irq < 0) {
> -			dev_err(&pdev->dev, "IRQ eth_lpi not found\n");
> -			ret = -ENODEV;
> -			goto err_disable_msi;
> -		}
>  	} else {
>  		res.irq = pdev->irq;
>  	}
> -- 
> 2.31.4
>