Commit 76afbdc7 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab Committed by Bjorn Helgaas
Browse files

PCI: kirin: Add power_off support for Kirin 960 PHY 

In order to prepare for module unload, add a power_off method for HiKey
960.

Link: https://lore.kernel.org/r/b095818b0d7fadae4cae200f481caf7a66e61fb4.1634812676.git.mchehab+huawei@kernel.org


Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Acked-by: default avatarXiaowei Song <songxiaowei@hisilicon.com>
parent aed9d9e4

drivers/pci/controller/dwc/pcie-kirin.c

+18 −3
Original line number Diff line number Diff line
@@ -342,6 +342,18 @@ static int hi3660_pcie_phy_init(struct platform_device *pdev, 
	return hi3660_pcie_phy_get_resource(phy);

}



static int hi3660_pcie_phy_power_off(struct kirin_pcie *pcie)

{

	struct hi3660_pcie_phy *phy = pcie->phy_priv;



	/* Drop power supply for Host */

	regmap_write(phy->sysctrl, SCTRL_PCIE_CMOS_OFFSET, 0x00);



	hi3660_pcie_phy_clk_ctrl(phy, false);



	return 0;

}



/*

 * The non-PHY part starts here

 */
@@ -561,7 +573,6 @@ static int kirin_pcie_add_bus(struct pci_bus *bus) 
	return 0;

}





static struct pci_ops kirin_pci_ops = {

	.read = kirin_pcie_rd_own_conf,

	.write = kirin_pcie_wr_own_conf,
@@ -715,8 +726,12 @@ static int kirin_pcie_power_on(struct platform_device *pdev, 


	return 0;

err:

	if (kirin_pcie->type != PCIE_KIRIN_INTERNAL_PHY)

	if (kirin_pcie->type == PCIE_KIRIN_INTERNAL_PHY) {

		hi3660_pcie_phy_power_off(kirin_pcie);

	} else {

		phy_power_off(kirin_pcie->phy);

		phy_exit(kirin_pcie->phy);

	}



	return ret;

}
@@ -726,7 +741,7 @@ static int __exit kirin_pcie_remove(struct platform_device *pdev) 
	struct kirin_pcie *kirin_pcie = platform_get_drvdata(pdev);



	if (kirin_pcie->type == PCIE_KIRIN_INTERNAL_PHY)

		return 0;

		return hi3660_pcie_phy_power_off(kirin_pcie);



	phy_power_off(kirin_pcie->phy);

	phy_exit(kirin_pcie->phy);