Merge branch 'dwmac-sti-refactor-cleanup'

Joachim Eastwood says:

====================
stmmac: dwmac-sti refactor+cleanup

This patch set aims to remove the init/exit callbacks from the
dwmac-sti driver and instead use standard PM callbacks. Doing this
will also allow us to cleanup the driver.

Eventually the init/exit callbacks will be deprecated and removed
from all drivers dwmac-* except for dwmac-generic. Drivers will be
refactored to use standard PM and remove callbacks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c

@@ -126,8 +126,8 @@ struct sti_dwmac {
 	struct clk *clk;	/* PHY clock */
 	u32 ctrl_reg;		/* GMAC glue-logic control register */
 	int clk_sel_reg;	/* GMAC ext clk selection register */
-	struct device *dev;
 	struct regmap *regmap;
+	bool gmac_en;
 	u32 speed;
 	void (*fix_retime_src)(void *priv, unsigned int speed);
 };
@@ -191,7 +191,7 @@ static void stih4xx_fix_retime_src(void *priv, u32 spd)
 		}
 	}
 
-	if (src == TX_RETIME_SRC_CLKGEN && dwmac->clk && freq)
+	if (src == TX_RETIME_SRC_CLKGEN && freq)
 		clk_set_rate(dwmac->clk, freq);
 
 	regmap_update_bits(dwmac->regmap, reg, STIH4XX_RETIME_SRC_MASK,
@@ -222,26 +222,20 @@ static void stid127_fix_retime_src(void *priv, u32 spd)
 			freq = DWMAC_2_5MHZ;
 	}
 
-	if (dwmac->clk && freq)
+	if (freq)
 		clk_set_rate(dwmac->clk, freq);
 
 	regmap_update_bits(dwmac->regmap, reg, STID127_RETIME_SRC_MASK, val);
 }
 
-static int sti_dwmac_init(struct platform_device *pdev, void *priv)
+static int sti_dwmac_set_mode(struct sti_dwmac *dwmac)
 {
-	struct sti_dwmac *dwmac = priv;
 	struct regmap *regmap = dwmac->regmap;
 	int iface = dwmac->interface;
-	struct device *dev = dwmac->dev;
-	struct device_node *np = dev->of_node;
 	u32 reg = dwmac->ctrl_reg;
 	u32 val;
 
-	if (dwmac->clk)
+	if (dwmac->gmac_en)
-		clk_prepare_enable(dwmac->clk);
-
-	if (of_property_read_bool(np, "st,gmac_en"))
 		regmap_update_bits(regmap, reg, EN_MASK, EN);
 
 	regmap_update_bits(regmap, reg, MII_PHY_SEL_MASK, phy_intf_sels[iface]);
@@ -249,18 +243,11 @@ static int sti_dwmac_init(struct platform_device *pdev, void *priv)
 	val = (iface == PHY_INTERFACE_MODE_REVMII) ? 0 : ENMII;
 	regmap_update_bits(regmap, reg, ENMII_MASK, val);
 
-	dwmac->fix_retime_src(priv, dwmac->speed);
+	dwmac->fix_retime_src(dwmac, dwmac->speed);
 
 	return 0;
 }
 
-static void sti_dwmac_exit(struct platform_device *pdev, void *priv)
-{
-	struct sti_dwmac *dwmac = priv;
-
-	if (dwmac->clk)
-		clk_disable_unprepare(dwmac->clk);
-}
 static int sti_dwmac_parse_data(struct sti_dwmac *dwmac,
 				struct platform_device *pdev)
 {
@@ -270,9 +257,6 @@ static int sti_dwmac_parse_data(struct sti_dwmac *dwmac,
 	struct regmap *regmap;
 	int err;
 
-	if (!np)
-		return -EINVAL;
-
 	/* clk selection from extra syscfg register */
 	dwmac->clk_sel_reg = -ENXIO;
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sti-clkconf");
@@ -289,9 +273,9 @@ static int sti_dwmac_parse_data(struct sti_dwmac *dwmac,
 		return err;
 	}
 
-	dwmac->dev = dev;
 	dwmac->interface = of_get_phy_mode(np);
 	dwmac->regmap = regmap;
+	dwmac->gmac_en = of_property_read_bool(np, "st,gmac_en");
 	dwmac->ext_phyclk = of_property_read_bool(np, "st,ext-phyclk");
 	dwmac->tx_retime_src = TX_RETIME_SRC_NA;
 	dwmac->speed = SPEED_100;
@@ -357,17 +341,62 @@ static int sti_dwmac_probe(struct platform_device *pdev)
 	dwmac->fix_retime_src = data->fix_retime_src;
 
 	plat_dat->bsp_priv = dwmac;
-	plat_dat->init = sti_dwmac_init;
-	plat_dat->exit = sti_dwmac_exit;
 	plat_dat->fix_mac_speed = data->fix_retime_src;
 
-	ret = sti_dwmac_init(pdev, plat_dat->bsp_priv);
+	ret = clk_prepare_enable(dwmac->clk);
 	if (ret)
 		return ret;
 
-	return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
+	ret = sti_dwmac_set_mode(dwmac);
+	if (ret)
+		goto disable_clk;
+
+	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
+	if (ret)
+		goto disable_clk;
+
+	return 0;
+
+disable_clk:
+	clk_disable_unprepare(dwmac->clk);
+	return ret;
 }
 
+static int sti_dwmac_remove(struct platform_device *pdev)
+{
+	struct sti_dwmac *dwmac = get_stmmac_bsp_priv(&pdev->dev);
+	int ret = stmmac_dvr_remove(&pdev->dev);
+
+	clk_disable_unprepare(dwmac->clk);
+
+	return ret;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int sti_dwmac_suspend(struct device *dev)
+{
+	struct sti_dwmac *dwmac = get_stmmac_bsp_priv(dev);
+	int ret = stmmac_suspend(dev);
+
+	clk_disable_unprepare(dwmac->clk);
+
+	return ret;
+}
+
+static int sti_dwmac_resume(struct device *dev)
+{
+	struct sti_dwmac *dwmac = get_stmmac_bsp_priv(dev);
+
+	clk_prepare_enable(dwmac->clk);
+	sti_dwmac_set_mode(dwmac);
+
+	return stmmac_resume(dev);
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(sti_dwmac_pm_ops, sti_dwmac_suspend,
+					   sti_dwmac_resume);
+
 static const struct sti_dwmac_of_data stih4xx_dwmac_data = {
 	.fix_retime_src = stih4xx_fix_retime_src,
 };
@@ -387,10 +416,10 @@ MODULE_DEVICE_TABLE(of, sti_dwmac_match);
 
 static struct platform_driver sti_dwmac_driver = {
 	.probe  = sti_dwmac_probe,
-	.remove = stmmac_pltfr_remove,
+	.remove = sti_dwmac_remove,
 	.driver = {
 		.name           = "sti-dwmac",
-		.pm		= &stmmac_pltfr_pm_ops,
+		.pm		= &sti_dwmac_pm_ops,
 		.of_match_table = sti_dwmac_match,
 	},
 };