diff mbox series

[16/26] net: stmmac: dwmac-qcom-ethqos: prepare the driver for more PHY modes

Message ID 20230612092355.87937-17-brgl@bgdev.pl (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series arm64: qcom: sa8775p-ride: enable the first ethernet port | expand

Checks

Context Check Description
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Bartosz Golaszewski June 12, 2023, 9:23 a.m. UTC 
From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

In preparation for supporting SGMII, let's make the code a bit more
generic. Add a new callback for MAC configuration so that we can assign
a different variant of it in the future.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 .../stmicro/stmmac/dwmac-qcom-ethqos.c        | 31 ++++++++++++++++---
 1 file changed, 26 insertions(+), 5 deletions(-)

Comments

Andrew Halaney June 13, 2023, 4:59 p.m. UTC | #1 
On Mon, Jun 12, 2023 at 11:23:45AM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> 
> In preparation for supporting SGMII, let's make the code a bit more
> generic. Add a new callback for MAC configuration so that we can assign
> a different variant of it in the future.
> 
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Reviewed-by: Andrew Halaney <ahalaney@redhat.com>

> ---
>  .../stmicro/stmmac/dwmac-qcom-ethqos.c        | 31 ++++++++++++++++---
>  1 file changed, 26 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
> index 21f329d2f7eb..2f96f2c11278 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
> @@ -92,12 +92,14 @@ struct ethqos_emac_driver_data {
>  struct qcom_ethqos {
>  	struct platform_device *pdev;
>  	void __iomem *rgmii_base;
> +	int (*configure_func)(struct qcom_ethqos *ethqos);
>  
>  	unsigned int rgmii_clk_rate;
>  	struct clk *rgmii_clk;
>  	struct clk *phyaux_clk;
>  	struct phy *serdes_phy;
>  	unsigned int speed;
> +	int phy_mode;
>  
>  	const struct ethqos_emac_por *por;
>  	unsigned int num_por;
> @@ -332,13 +334,11 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
>  {
>  	struct device *dev = &ethqos->pdev->dev;
>  	int phase_shift;
> -	int phy_mode;
>  	int loopback;
>  
>  	/* Determine if the PHY adds a 2 ns TX delay or the MAC handles it */
> -	phy_mode = device_get_phy_mode(dev);
> -	if (phy_mode == PHY_INTERFACE_MODE_RGMII_ID ||
> -	    phy_mode == PHY_INTERFACE_MODE_RGMII_TXID)
> +	if (ethqos->phy_mode == PHY_INTERFACE_MODE_RGMII_ID ||
> +	    ethqos->phy_mode == PHY_INTERFACE_MODE_RGMII_TXID)
>  		phase_shift = 0;
>  	else
>  		phase_shift = RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN;
> @@ -485,7 +485,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
>  	return 0;
>  }
>  
> -static int ethqos_configure(struct qcom_ethqos *ethqos)
> +static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos)
>  {
>  	struct device *dev = &ethqos->pdev->dev;
>  	volatile unsigned int dll_lock;
> @@ -561,6 +561,11 @@ static int ethqos_configure(struct qcom_ethqos *ethqos)
>  	return 0;
>  }
>  
> +static int ethqos_configure(struct qcom_ethqos *ethqos)
> +{
> +	return ethqos->configure_func(ethqos);
> +}
> +
>  static void ethqos_fix_mac_speed(void *priv, unsigned int speed)
>  {
>  	struct qcom_ethqos *ethqos = priv;
> @@ -660,6 +665,22 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
>  		goto out_config_dt;
>  	}
>  
> +	ethqos->phy_mode = device_get_phy_mode(dev);
> +	switch (ethqos->phy_mode) {
> +	case PHY_INTERFACE_MODE_RGMII:
> +	case PHY_INTERFACE_MODE_RGMII_ID:
> +	case PHY_INTERFACE_MODE_RGMII_RXID:
> +	case PHY_INTERFACE_MODE_RGMII_TXID:
> +		ethqos->configure_func = ethqos_configure_rgmii;
> +		break;
> +	case -ENODEV:
> +		ret = -ENODEV;
> +		goto out_config_dt;
> +	default:
> +		ret = -EINVAL;
> +		goto out_config_dt;
> +	}
> +
>  	ethqos->pdev = pdev;
>  	ethqos->rgmii_base = devm_platform_ioremap_resource_byname(pdev, "rgmii");
>  	if (IS_ERR(ethqos->rgmii_base)) {
> -- 
> 2.39.2
>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index 21f329d2f7eb..2f96f2c11278 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -92,12 +92,14 @@  struct ethqos_emac_driver_data {
 struct qcom_ethqos {
 	struct platform_device *pdev;
 	void __iomem *rgmii_base;
+	int (*configure_func)(struct qcom_ethqos *ethqos);
 
 	unsigned int rgmii_clk_rate;
 	struct clk *rgmii_clk;
 	struct clk *phyaux_clk;
 	struct phy *serdes_phy;
 	unsigned int speed;
+	int phy_mode;
 
 	const struct ethqos_emac_por *por;
 	unsigned int num_por;
@@ -332,13 +334,11 @@  static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 {
 	struct device *dev = &ethqos->pdev->dev;
 	int phase_shift;
-	int phy_mode;
 	int loopback;
 
 	/* Determine if the PHY adds a 2 ns TX delay or the MAC handles it */
-	phy_mode = device_get_phy_mode(dev);
-	if (phy_mode == PHY_INTERFACE_MODE_RGMII_ID ||
-	    phy_mode == PHY_INTERFACE_MODE_RGMII_TXID)
+	if (ethqos->phy_mode == PHY_INTERFACE_MODE_RGMII_ID ||
+	    ethqos->phy_mode == PHY_INTERFACE_MODE_RGMII_TXID)
 		phase_shift = 0;
 	else
 		phase_shift = RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN;
@@ -485,7 +485,7 @@  static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
 	return 0;
 }
 
-static int ethqos_configure(struct qcom_ethqos *ethqos)
+static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos)
 {
 	struct device *dev = &ethqos->pdev->dev;
 	volatile unsigned int dll_lock;
@@ -561,6 +561,11 @@  static int ethqos_configure(struct qcom_ethqos *ethqos)
 	return 0;
 }
 
+static int ethqos_configure(struct qcom_ethqos *ethqos)
+{
+	return ethqos->configure_func(ethqos);
+}
+
 static void ethqos_fix_mac_speed(void *priv, unsigned int speed)
 {
 	struct qcom_ethqos *ethqos = priv;
@@ -660,6 +665,22 @@  static int qcom_ethqos_probe(struct platform_device *pdev)
 		goto out_config_dt;
 	}
 
+	ethqos->phy_mode = device_get_phy_mode(dev);
+	switch (ethqos->phy_mode) {
+	case PHY_INTERFACE_MODE_RGMII:
+	case PHY_INTERFACE_MODE_RGMII_ID:
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+		ethqos->configure_func = ethqos_configure_rgmii;
+		break;
+	case -ENODEV:
+		ret = -ENODEV;
+		goto out_config_dt;
+	default:
+		ret = -EINVAL;
+		goto out_config_dt;
+	}
+
 	ethqos->pdev = pdev;
 	ethqos->rgmii_base = devm_platform_ioremap_resource_byname(pdev, "rgmii");
 	if (IS_ERR(ethqos->rgmii_base)) {