From: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Date: Fri, 27 Oct 2023 12:29:55 +0000 (+0200)
Subject: usb: phy: generic: add suspend support for regulator
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9768af12edb3b23cfa1f7c05e019115b73f9490c;p=linux.git

usb: phy: generic: add suspend support for regulator

Disable the vcc regulator on suspend and enable it on resume.

Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://lore.kernel.org/r/20231027122955.22123-1-francesco@dolcini.it
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
index 770081b828a42..9ab50f26db607 100644
--- a/drivers/usb/phy/phy-generic.c
+++ b/drivers/usb/phy/phy-generic.c
@@ -46,15 +46,21 @@ EXPORT_SYMBOL_GPL(usb_phy_generic_unregister);
 static int nop_set_suspend(struct usb_phy *x, int suspend)
 {
 	struct usb_phy_generic *nop = dev_get_drvdata(x->dev);
+	int ret = 0;
 
-	if (!IS_ERR(nop->clk)) {
-		if (suspend)
+	if (suspend) {
+		if (!IS_ERR(nop->clk))
 			clk_disable_unprepare(nop->clk);
-		else
+		if (!IS_ERR(nop->vcc) && !device_may_wakeup(x->dev))
+			ret = regulator_disable(nop->vcc);
+	} else {
+		if (!IS_ERR(nop->vcc) && !device_may_wakeup(x->dev))
+			ret = regulator_enable(nop->vcc);
+		if (!IS_ERR(nop->clk))
 			clk_prepare_enable(nop->clk);
 	}
 
-	return 0;
+	return ret;
 }
 
 static void nop_reset(struct usb_phy_generic *nop)