[PATCH v2 2/5] phy: renesas: rcar-gen3-usb2: store drvdata pointer in channel

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Store the SoC-specific driver data pointer (struct rcar_gen3_phy_drv_data)
directly in struct rcar_gen3_chan instead of copying individual flags into
separate channel members.

Obtain the drvdata with of_device_get_match_data() in probe and assign it
to channel->phy_data. Update all call sites to reference
`channel->phy_data->*` for SoC-specific behaviour (for example no_adp_ctrl
and utmi_ctrl). Remove the redundant soc_no_adp_ctrl and utmi_ctrl fields
from struct rcar_gen3_chan.

This simplifies the probe path, reduces duplication, and makes it easier
to extend the driver with additional platform-specific fields in the
future.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
v1->v2:
- Renamed drvdata to phy_data.
- Updated commit message to clarify the change.
- Dropped local phy_data variable in probe, using channel->phy_data
  directly.
---
 drivers/phy/renesas/phy-rcar-gen3-usb2.c | 27 ++++++++++--------------
 1 file changed, 11 insertions(+), 16 deletions(-)

diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c
index 47beb94cd424..7ac56102aed0 100644
--- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c
+++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c
@@ -122,6 +122,7 @@ struct rcar_gen3_phy {
 struct rcar_gen3_chan {
 	void __iomem *base;
 	struct device *dev;	/* platform_device's device */
+	const struct rcar_gen3_phy_drv_data *phy_data;
 	struct extcon_dev *extcon;
 	struct rcar_gen3_phy rphys[NUM_OF_PHYS];
 	struct regulator *vbus;
@@ -133,8 +134,6 @@ struct rcar_gen3_chan {
 	bool extcon_host;
 	bool is_otg_channel;
 	bool uses_otg_pins;
-	bool soc_no_adp_ctrl;
-	bool utmi_ctrl;
 };
 
 struct rcar_gen3_phy_drv_data {
@@ -204,7 +203,7 @@ static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan *ch, int vbus)
 	u32 val;
 
 	dev_vdbg(ch->dev, "%s: %08x, %d\n", __func__, val, vbus);
-	if (ch->soc_no_adp_ctrl) {
+	if (ch->phy_data->no_adp_ctrl) {
 		if (ch->vbus)
 			regulator_hardware_enable(ch->vbus, vbus);
 
@@ -290,7 +289,7 @@ static bool rcar_gen3_check_id(struct rcar_gen3_chan *ch)
 	if (!ch->uses_otg_pins)
 		return (ch->dr_mode == USB_DR_MODE_HOST) ? false : true;
 
-	if (ch->soc_no_adp_ctrl)
+	if (ch->phy_data->no_adp_ctrl)
 		return !!(readl(ch->base + USB2_LINECTRL1) & USB2_LINECTRL1_USB2_IDMON);
 
 	return !!(readl(ch->base + USB2_ADPCTRL) & USB2_ADPCTRL_IDDIG);
@@ -421,7 +420,7 @@ static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch)
 	      USB2_LINECTRL1_DMRPD_EN | USB2_LINECTRL1_DM_RPD;
 	writel(val, usb2_base + USB2_LINECTRL1);
 
-	if (!ch->soc_no_adp_ctrl) {
+	if (!ch->phy_data->no_adp_ctrl) {
 		val = readl(usb2_base + USB2_VBCTRL);
 		val &= ~USB2_VBCTRL_OCCLREN;
 		writel(val | USB2_VBCTRL_DRVVBUSSEL, usb2_base + USB2_VBCTRL);
@@ -487,7 +486,7 @@ static int rcar_gen3_phy_usb2_init(struct phy *p)
 	if (rphy->int_enable_bits)
 		rcar_gen3_init_otg(channel);
 
-	if (channel->utmi_ctrl) {
+	if (channel->phy_data->utmi_ctrl) {
 		val = readl(usb2_base + USB2_REGEN_CG_CTRL) | USB2_REGEN_CG_CTRL_UPHY_WEN;
 		writel(val, usb2_base + USB2_REGEN_CG_CTRL);
 
@@ -730,7 +729,6 @@ static int rcar_gen3_phy_usb2_init_bus(struct rcar_gen3_chan *channel)
 
 static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
 {
-	const struct rcar_gen3_phy_drv_data *phy_data;
 	struct device *dev = &pdev->dev;
 	struct rcar_gen3_chan *channel;
 	struct phy_provider *provider;
@@ -773,8 +771,8 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
 	 */
 	pm_runtime_enable(dev);
 
-	phy_data = of_device_get_match_data(dev);
-	if (!phy_data) {
+	channel->phy_data = of_device_get_match_data(dev);
+	if (!channel->phy_data) {
 		ret = -EINVAL;
 		goto error;
 	}
@@ -782,22 +780,19 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, channel);
 	channel->dev = dev;
 
-	if (phy_data->init_bus) {
+	if (channel->phy_data->init_bus) {
 		ret = rcar_gen3_phy_usb2_init_bus(channel);
 		if (ret)
 			goto error;
 	}
 
-	channel->soc_no_adp_ctrl = phy_data->no_adp_ctrl;
-	if (phy_data->no_adp_ctrl)
+	if (channel->phy_data->no_adp_ctrl)
 		channel->obint_enable_bits = USB2_OBINT_IDCHG_EN;
 
-	channel->utmi_ctrl = phy_data->utmi_ctrl;
-
 	spin_lock_init(&channel->lock);
 	for (i = 0; i < NUM_OF_PHYS; i++) {
 		channel->rphys[i].phy = devm_phy_create(dev, NULL,
-							phy_data->phy_usb2_ops);
+							channel->phy_data->phy_usb2_ops);
 		if (IS_ERR(channel->rphys[i].phy)) {
 			dev_err(dev, "Failed to create USB2 PHY\n");
 			ret = PTR_ERR(channel->rphys[i].phy);
@@ -808,7 +803,7 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
 		phy_set_drvdata(channel->rphys[i].phy, &channel->rphys[i]);
 	}
 
-	if (channel->soc_no_adp_ctrl && channel->is_otg_channel)
+	if (channel->phy_data->no_adp_ctrl && channel->is_otg_channel)
 		channel->vbus = devm_regulator_get_exclusive(dev, "vbus");
 	else
 		channel->vbus = devm_regulator_get_optional(dev, "vbus");
-- 
2.50.1