[PATCH v4 5/6] phy: renesas: phy-rcar-gen3-usb2: Control VBUS for RZ/G2L SoCs

Biju Das
2024-06-16T10:54:34Z

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

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
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