diff mbox series

[RESEND,v2,10/14] net: stmmac: dwmac-qcom-ethqos: prepare the driver for more PHY modes

Message ID 20230619092402.195578-11-brgl@bgdev.pl (mailing list archive)
State Accepted
Commit 25c4a0769443d77c74fe73c80a978e28b08dc976
Delegated to: Netdev Maintainers
Headers show
Series net: stmmac: dwmac-qcom-ethqos: add support for EMAC4 | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
netdev/cc_maintainers success CCed 13 of 13 maintainers
netdev/build_clang success Errors and warnings before: 8 this patch: 8
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 8 this patch: 8
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 69 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Bartosz Golaszewski June 19, 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>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
---
 .../stmicro/stmmac/dwmac-qcom-ethqos.c        | 31 ++++++++++++++++---
 1 file changed, 26 insertions(+), 5 deletions(-)
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 a739e1d5c046..0ececc951528 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -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)) {