[PATCH v6 03/10] reset: rzg2l-usbphy-ctrl: Introduce info struct for match data

[Biju <biju.das.au@gmail.com>]

From: Biju Das <biju.das.jz@bp.renesas.com>

Replace the integer flag RZG2L_USBPHY_CTRL_PWRRDY with a structured
rzg2l_usbphy_ctrl_info type to hold per-compatible configuration data.
The new struct currently carries a pwrrdy boolean. The probe function
now retrieves this struct via device_get_match_data() and
conditionally calls rzg2l_usbphy_ctrl_pwrrdy_init() based on the
pwrrdy flag, removing the previous integer cast approach.

This refactoring prepares the driver for RZ/G3L (r9a08g046) support,
which requires a different regulator configuration with two per-port
VBUS regulators.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
v5->v6:
 * No change.
v4->v5:
 * No change.
v3->v4:
 * Updated the commit description.
 * Moved the handling of regulator_driver_name to patch #3
   in preparation for id_table match.
v2->v3:
 * No change.
v1->v2:
 * Updated commit description.
---
 drivers/reset/reset-rzg2l-usbphy-ctrl.c | 32 ++++++++++++++-----------
 1 file changed, 18 insertions(+), 14 deletions(-)

diff --git a/drivers/reset/reset-rzg2l-usbphy-ctrl.c b/drivers/reset/reset-rzg2l-usbphy-ctrl.c
index f90fdb7e6ea4..79503f6f4b23 100644
--- a/drivers/reset/reset-rzg2l-usbphy-ctrl.c
+++ b/drivers/reset/reset-rzg2l-usbphy-ctrl.c
@@ -41,6 +41,10 @@ struct rzg2l_usbphy_ctrl_priv {
 	spinlock_t lock;
 };
 
+struct rzg2l_usbphy_ctrl_info {
+	bool pwrrdy;
+};
+
 #define rcdev_to_priv(x)	container_of(x, struct rzg2l_usbphy_ctrl_priv, rcdev)
 
 static int rzg2l_usbphy_ctrl_assert(struct reset_controller_dev *rcdev,
@@ -106,14 +110,15 @@ static void rzg2l_usbphy_ctrl_init(struct rzg2l_usbphy_ctrl_priv *priv)
 	spin_unlock_irqrestore(&priv->lock, flags);
 }
 
-#define RZG2L_USBPHY_CTRL_PWRRDY	1
+static const struct rzg2l_usbphy_ctrl_info rzg2l_info = {};
+
+static const struct rzg2l_usbphy_ctrl_info rzg3s_info = {
+	.pwrrdy = true,
+};
 
 static const struct of_device_id rzg2l_usbphy_ctrl_match_table[] = {
-	{ .compatible = "renesas,rzg2l-usbphy-ctrl" },
-	{
-		.compatible = "renesas,r9a08g045-usbphy-ctrl",
-		.data = (void *)RZG2L_USBPHY_CTRL_PWRRDY
-	},
+	{ .compatible = "renesas,rzg2l-usbphy-ctrl", .data = &rzg2l_info },
+	{ .compatible = "renesas,r9a08g045-usbphy-ctrl", .data = &rzg3s_info },
 	{ /* Sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, rzg2l_usbphy_ctrl_match_table);
@@ -153,14 +158,9 @@ static int rzg2l_usbphy_ctrl_pwrrdy_init(struct device *dev,
 {
 	struct reg_field field;
 	struct regmap *regmap;
-	const int *data;
 	u32 args[2];
 	int ret;
 
-	data = device_get_match_data(dev);
-	if ((uintptr_t)data != RZG2L_USBPHY_CTRL_PWRRDY)
-		return 0;
-
 	regmap = syscon_regmap_lookup_by_phandle_args(dev->of_node,
 						      "renesas,sysc-pwrrdy",
 						      ARRAY_SIZE(args), args);
@@ -188,6 +188,7 @@ static int rzg2l_usbphy_ctrl_pwrrdy_init(struct device *dev,
 
 static int rzg2l_usbphy_ctrl_probe(struct platform_device *pdev)
 {
+	const struct rzg2l_usbphy_ctrl_info *info;
 	struct device *dev = &pdev->dev;
 	struct rzg2l_usbphy_ctrl_priv *priv;
 	struct platform_device *vdev;
@@ -206,9 +207,12 @@ static int rzg2l_usbphy_ctrl_probe(struct platform_device *pdev)
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);
 
-	error = rzg2l_usbphy_ctrl_pwrrdy_init(dev, priv);
-	if (error)
-		return error;
+	info = device_get_match_data(dev);
+	if (info->pwrrdy) {
+		error = rzg2l_usbphy_ctrl_pwrrdy_init(dev, priv);
+		if (error)
+			return error;
+	}
 
 	priv->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
 	if (IS_ERR(priv->rstc))
-- 
2.43.0