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Message-Id: <20250910-qcom-sa8255p-emac-v1-7-32a79cf1e668@linaro.org>
Date: Wed, 10 Sep 2025 10:07:44 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Richard Cochran <richardcochran@...il.com>, 
 Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Vinod Koul <vkoul@...nel.org>, Giuseppe Cavallaro <peppe.cavallaro@...com>, 
 Jose Abreu <joabreu@...opsys.com>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org, 
 linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 7/9] net: stmmac: qcom-ethqos: split power management
 context into a separate struct

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

With match data split into general and power-management sections, let's
now do the same with runtime device data.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 .../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c    | 46 ++++++++++++----------
 1 file changed, 25 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index d4ddf1c5c1bca2ae1fc5ec38a4ac244e1677482e..1fec3aa62f0f01b29cdbc4a5887dbaa0c3c60fcd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -110,17 +110,21 @@ struct ethqos_emac_match_data {
 	const struct ethqos_emac_pm_data *pm_data;
 };
 
+struct ethqos_emac_pm_ctx {
+	struct clk *link_clk;
+	unsigned int link_clk_rate;
+	struct phy *serdes_phy;
+};
+
 struct qcom_ethqos {
 	struct platform_device *pdev;
 	void __iomem *rgmii_base;
 	void __iomem *mac_base;
 	int (*configure_func)(struct qcom_ethqos *ethqos, int speed);
 
-	unsigned int link_clk_rate;
-	struct clk *link_clk;
-	struct phy *serdes_phy;
-	int serdes_speed;
+	struct ethqos_emac_pm_ctx pm;
 	phy_interface_t phy_mode;
+	int serdes_speed;
 
 	const struct ethqos_emac_por *por;
 	unsigned int num_por;
@@ -186,9 +190,9 @@ ethqos_update_link_clk(struct qcom_ethqos *ethqos, int speed)
 
 	rate = rgmii_clock(speed);
 	if (rate > 0)
-		ethqos->link_clk_rate = rate * 2;
+		ethqos->pm.link_clk_rate = rate * 2;
 
-	clk_set_rate(ethqos->link_clk, ethqos->link_clk_rate);
+	clk_set_rate(ethqos->pm.link_clk, ethqos->pm.link_clk_rate);
 }
 
 static void
@@ -645,7 +649,7 @@ static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos, int speed)
 static void ethqos_set_serdes_speed(struct qcom_ethqos *ethqos, int speed)
 {
 	if (ethqos->serdes_speed != speed) {
-		phy_set_speed(ethqos->serdes_phy, speed);
+		phy_set_speed(ethqos->pm.serdes_phy, speed);
 		ethqos->serdes_speed = speed;
 	}
 }
@@ -724,23 +728,23 @@ static int qcom_ethqos_serdes_powerup(struct net_device *ndev, void *priv)
 	struct qcom_ethqos *ethqos = priv;
 	int ret;
 
-	ret = phy_init(ethqos->serdes_phy);
+	ret = phy_init(ethqos->pm.serdes_phy);
 	if (ret)
 		return ret;
 
-	ret = phy_power_on(ethqos->serdes_phy);
+	ret = phy_power_on(ethqos->pm.serdes_phy);
 	if (ret)
 		return ret;
 
-	return phy_set_speed(ethqos->serdes_phy, ethqos->serdes_speed);
+	return phy_set_speed(ethqos->pm.serdes_phy, ethqos->serdes_speed);
 }
 
 static void qcom_ethqos_serdes_powerdown(struct net_device *ndev, void *priv)
 {
 	struct qcom_ethqos *ethqos = priv;
 
-	phy_power_off(ethqos->serdes_phy);
-	phy_exit(ethqos->serdes_phy);
+	phy_power_off(ethqos->pm.serdes_phy);
+	phy_exit(ethqos->pm.serdes_phy);
 }
 
 static int ethqos_clks_config(void *priv, bool enabled)
@@ -749,7 +753,7 @@ static int ethqos_clks_config(void *priv, bool enabled)
 	int ret = 0;
 
 	if (enabled) {
-		ret = clk_prepare_enable(ethqos->link_clk);
+		ret = clk_prepare_enable(ethqos->pm.link_clk);
 		if (ret) {
 			dev_err(&ethqos->pdev->dev, "link_clk enable failed\n");
 			return ret;
@@ -762,7 +766,7 @@ static int ethqos_clks_config(void *priv, bool enabled)
 		 */
 		ethqos_set_func_clk_en(ethqos);
 	} else {
-		clk_disable_unprepare(ethqos->link_clk);
+		clk_disable_unprepare(ethqos->pm.link_clk);
 	}
 
 	return ret;
@@ -859,9 +863,9 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	ethqos->has_emac_ge_3 = drv_data->has_emac_ge_3;
 	ethqos->needs_sgmii_loopback = drv_data->needs_sgmii_loopback;
 
-	ethqos->link_clk = devm_clk_get(dev, clk_name);
-	if (IS_ERR(ethqos->link_clk))
-		return dev_err_probe(dev, PTR_ERR(ethqos->link_clk),
+	ethqos->pm.link_clk = devm_clk_get(dev, clk_name);
+	if (IS_ERR(ethqos->pm.link_clk))
+		return dev_err_probe(dev, PTR_ERR(ethqos->pm.link_clk),
 				     "Failed to get link_clk\n");
 
 	ret = ethqos_clks_config(ethqos, true);
@@ -872,9 +876,9 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ethqos->serdes_phy = devm_phy_optional_get(dev, "serdes");
-	if (IS_ERR(ethqos->serdes_phy))
-		return dev_err_probe(dev, PTR_ERR(ethqos->serdes_phy),
+	ethqos->pm.serdes_phy = devm_phy_optional_get(dev, "serdes");
+	if (IS_ERR(ethqos->pm.serdes_phy))
+		return dev_err_probe(dev, PTR_ERR(ethqos->pm.serdes_phy),
 				     "Failed to get serdes phy\n");
 
 	ethqos->serdes_speed = SPEED_1000;
@@ -898,7 +902,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	if (drv_data->dma_addr_width)
 		plat_dat->host_dma_width = drv_data->dma_addr_width;
 
-	if (ethqos->serdes_phy) {
+	if (ethqos->pm.serdes_phy) {
 		plat_dat->serdes_powerup = qcom_ethqos_serdes_powerup;
 		plat_dat->serdes_powerdown  = qcom_ethqos_serdes_powerdown;
 	}

-- 
2.48.1

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