Commit 51770dae authored by Amelie Delaunay's avatar Amelie Delaunay Committed by Vinod Koul
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phy: stm32: manage optional vbus regulator on phy_power_on/off 



This patch adds support for optional vbus regulator.
It is managed on phy_power_on/off calls and may be needed for host mode.

Signed-off-by: default avatarAmelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20210517120821.26466-3-amelie.delaunay@foss.st.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 436b6403

drivers/phy/st/phy-stm32-usbphyc.c

+31 −0
Original line number Diff line number Diff line
@@ -57,6 +57,7 @@ struct pll_params { 
struct stm32_usbphyc_phy {

	struct phy *phy;

	struct stm32_usbphyc *usbphyc;

	struct regulator *vbus;

	u32 index;

	bool active;

};
@@ -291,9 +292,31 @@ static int stm32_usbphyc_phy_exit(struct phy *phy) 
	return stm32_usbphyc_pll_disable(usbphyc);

}



static int stm32_usbphyc_phy_power_on(struct phy *phy)

{

	struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy);



	if (usbphyc_phy->vbus)

		return regulator_enable(usbphyc_phy->vbus);



	return 0;

}



static int stm32_usbphyc_phy_power_off(struct phy *phy)

{

	struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy);



	if (usbphyc_phy->vbus)

		return regulator_disable(usbphyc_phy->vbus);



	return 0;

}



static const struct phy_ops stm32_usbphyc_phy_ops = {

	.init = stm32_usbphyc_phy_init,

	.exit = stm32_usbphyc_phy_exit,

	.power_on = stm32_usbphyc_phy_power_on,

	.power_off = stm32_usbphyc_phy_power_off,

	.owner = THIS_MODULE,

};
@@ -519,6 +542,14 @@ static int stm32_usbphyc_probe(struct platform_device *pdev) 
		usbphyc->phys[port]->index = index;

		usbphyc->phys[port]->active = false;



		usbphyc->phys[port]->vbus = devm_regulator_get_optional(&phy->dev, "vbus");

		if (IS_ERR(usbphyc->phys[port]->vbus)) {

			ret = PTR_ERR(usbphyc->phys[port]->vbus);

			if (ret == -EPROBE_DEFER)

				goto put_child;

			usbphyc->phys[port]->vbus = NULL;

		}



		port++;

	}