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net: stmmac: dwmac-qcom-ethqos: prepare the driver for more PHY modes

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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>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Bartosz Golaszewski 2023-06-19 11:23:58 +02:00 committed by Jakub Kicinski
parent feeb27165c
commit 25c4a07694
1 changed files with 26 additions and 5 deletions
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31
drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
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@ -92,11 +92,13 @@ 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 link_clk_rate;
struct clk *link_clk;
struct phy *serdes_phy;
unsigned int speed;
int phy_mode;
const struct ethqos_emac_por *por;
unsigned int num_por;
@ -331,13 +333,11 @@ 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;
@ -483,7 +483,7 @@ 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;
@ -559,6 +559,11 @@ 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;
@ -650,6 +655,22 @@ 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)) {