[PATCH v5 3/4] phy: renesas: phy-rcar-gen3-usb2: Control VBUS for RZ/G2L SoCs

[Biju Das]

Use regulator_hardware_enable() for controlling VBUS enable for
RZ/G2L alike SoCs in interrupt context.

Signed-off-by: Biju Das <biju.das.jz at bp.renesas.com>
Acked-by: Vinod Koul <vkoul at kernel.org>
---
v4->v5:
 * Added Ack from Vinod.
v3->v4:
 * Updated commit description with regulator_hardware_enable()
 * Used devm_regulator_get_exclusive() to get regulator handle.
v2->v3:
 * Replaced regulator's regmap API with newly introduced
   regulator_set_hardware_enable_register to enable/disable regulator
   in interrupt context.
 * Dropped using "usb_vbus-supply"
v1->v2:
 * Used regulator driver's regmap to handle VBUS.
---
 drivers/phy/renesas/phy-rcar-gen3-usb2.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c
index fbab6ac0f0d1..7594f64eb737 100644
--- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c
+++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c
@@ -188,6 +188,9 @@ static void rcar_gen3_enable_vbus_ctrl(struct rcar_gen3_chan *ch, int vbus)
 
 	dev_vdbg(ch->dev, "%s: %08x, %d\n", __func__, val, vbus);
 	if (ch->soc_no_adp_ctrl) {
+		if (ch->vbus)
+			regulator_hardware_enable(ch->vbus, vbus);
+
 		vbus_ctrl_reg = USB2_VBCTRL;
 		vbus_ctrl_val = USB2_VBCTRL_VBOUT;
 	}
@@ -718,7 +721,10 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
 		phy_set_drvdata(channel->rphys[i].phy, &channel->rphys[i]);
 	}
 
-	channel->vbus = devm_regulator_get_optional(dev, "vbus");
+	if (channel->soc_no_adp_ctrl && channel->is_otg_channel)
+		channel->vbus = devm_regulator_get_exclusive(dev, "vbus");
+	else
+		channel->vbus = devm_regulator_get_optional(dev, "vbus");
 	if (IS_ERR(channel->vbus)) {
 		if (PTR_ERR(channel->vbus) == -EPROBE_DEFER) {
 			ret = PTR_ERR(channel->vbus);
-- 
2.43.0