Commit 95e38c17 authored by Amelie Delaunay's avatar Amelie Delaunay Committed by Vinod Koul
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phy: stm32: restore utmi switch on resume 



UTMI switch value can be lost during suspend/resume, depending on the power
state reached.
This patch adds resume function to usbphyc, to reconfigure utmi switch
after suspend.

Signed-off-by: default avatarAmelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20211015161427.220784-2-amelie.delaunay@foss.st.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 4ff6b676

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

+13 −0
Original line number Diff line number Diff line
@@ -598,6 +598,18 @@ static int stm32_usbphyc_remove(struct platform_device *pdev) 
	return 0;

}



static int __maybe_unused stm32_usbphyc_resume(struct device *dev)

{

	struct stm32_usbphyc *usbphyc = dev_get_drvdata(dev);



	if (usbphyc->switch_setup >= 0)

		stm32_usbphyc_switch_setup(usbphyc, usbphyc->switch_setup);



	return 0;

}



static SIMPLE_DEV_PM_OPS(stm32_usbphyc_pm_ops, NULL, stm32_usbphyc_resume);



static const struct of_device_id stm32_usbphyc_of_match[] = {

	{ .compatible = "st,stm32mp1-usbphyc", },

	{ },
@@ -610,6 +622,7 @@ static struct platform_driver stm32_usbphyc_driver = { 
	.driver = {

		.of_match_table = stm32_usbphyc_of_match,

		.name = "stm32-usbphyc",

		.pm = &stm32_usbphyc_pm_ops,

	}

};

module_platform_driver(stm32_usbphyc_driver);